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♪ ♪
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00:00:04,604 --> 00:00:09,375
The Arctic is a tough place
to be a parent;
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even tougher when you have
to lead your family
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on an epic journey
just to survive.
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[wind howling]
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♪ ♪
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40 degrees below.
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[cub groans]
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All too tempting to stay in.
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♪ ♪
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♪ ♪
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Mom can't afford to get
too cozy, though.
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[cub squeaks]
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After nursing for three months
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and losing two pounds of fat
every day,
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she's starving.
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[groans]
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♪ ♪
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But breakfast is
over 100 miles away,
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out on the Hudson Bay sea ice.
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[squeak]
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Leave too soon,
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and her puppy-size cubs
will struggle to keep up.
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[squeak]
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But if she doesn't get to eat,
none of them stand a chance.
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♪ ♪
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♪ ♪
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With the arrival
of the spring sun,
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she makes her move.
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♪ ♪
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♪ ♪
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She leads them into a world
of new sights...
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sounds...
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and scares.
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[squeak]
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♪ ♪
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One day they'll grow up to be
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the world's most powerful
land predator.
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But not today.
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♪ ♪
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[grunts]
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♪ ♪
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As a single mom,
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her job is to keep them safe
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on the most dangerous journey
of their lives.
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♪ ♪
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Approaching the coast,
she's on high alert.
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[howl]
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♪ ♪
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This is wolf territory.
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♪ ♪
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Packs patrol the shores
of Canada's Hudson Bay
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and could target
polar bear cubs.
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♪ ♪
55
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Mom's incredible sense of smell
helps her pick up their scent
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from over five miles away...
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♪ ♪
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...giving her cubs
a crucial head start.
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[chuffing]
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♪ ♪
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[grunts]
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♪ ♪
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[cub cries]
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♪ ♪
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[cub crying]
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00:04:03,642 --> 00:04:06,812
♪ ♪
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00:04:06,812 --> 00:04:09,582
[cub crying]
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[chuffing]
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[whimpers]
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♪ ♪
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♪ ♪
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Her years of experience
have helped them
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sneak through enemy lines.
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♪ ♪
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♪ ♪
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She's made it
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to the frozen ocean.
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Ahead, a four-month journey
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out onto the sea ice.
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She sets a course northeast,
81
00:05:00,499 --> 00:05:03,503
cubs safely in tow...
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...to find her first meal
in eight months.
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♪ ♪
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Nothing is easy
here in the Arctic.
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♪ ♪
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00:05:25,391 --> 00:05:31,931
Polar parents must make
incredible journeys,
87
00:05:31,931 --> 00:05:37,402
teaching their young
how to make it through,
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all racing to make the most
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of the short Arctic summer
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00:05:44,210 --> 00:05:49,281
in a world that's changing
faster than ever before.
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[barks]
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♪ ♪
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♪ ♪
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00:06:04,997 --> 00:06:07,633
♪ ♪
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♪ ♪
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While some parents
are just setting out,
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00:06:15,108 --> 00:06:20,012
others are ending
a long winter on the move.
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00:06:20,012 --> 00:06:22,648
♪ ♪
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00:06:22,648 --> 00:06:28,620
♪ ♪
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This male arctic fox has spent
the last six months...
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alone.
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[sniffing]
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He really goes the distance
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when food is in short supply.
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00:06:45,871 --> 00:06:49,542
One even clocked
more than 1,000 miles
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in just over two months.
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♪ ♪
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This little guy
has been surviving
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off his street smarts.
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[squawk]
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00:07:07,660 --> 00:07:12,965
You can't be too careful when
you're only 12 inches tall.
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00:07:12,965 --> 00:07:15,368
[seagulls squawking]
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[seagulls squawking]
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In the Arctic, even leftovers
are a reason to celebrate.
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♪ ♪
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♪ ♪
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With spring in the air,
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he's heading home to reunite
with his lifelong mate.
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♪ ♪
120
00:07:49,034 --> 00:07:55,107
♪ ♪
121
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They've spent the long winter
apart, searching for food.
122
00:08:00,245 --> 00:08:05,283
♪ ♪
123
00:08:05,283 --> 00:08:10,089
He must find her if there's
any hope of starting a family.
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00:08:10,089 --> 00:08:13,959
♪ ♪
125
00:08:13,959 --> 00:08:19,965
♪ ♪
126
00:08:19,965 --> 00:08:24,269
Maybe she hasn't
survived the winter.
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♪ ♪
128
00:08:31,243 --> 00:08:38,250
♪ ♪
129
00:08:38,250 --> 00:08:40,352
Ah, there she is.
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[squeak]
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♪ ♪
132
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Together again.
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[yipping]
134
00:08:50,196 --> 00:08:55,767
[yipping]
135
00:08:55,767 --> 00:08:57,903
Time to get on
with the business
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00:08:57,903 --> 00:09:00,672
of becoming a mom and dad
137
00:09:00,672 --> 00:09:02,908
and to raise
their litter of pups
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00:09:02,908 --> 00:09:05,210
before the end of summer.
139
00:09:05,210 --> 00:09:08,180
♪ ♪
140
00:09:08,180 --> 00:09:14,787
♪ ♪
141
00:09:17,856 --> 00:09:22,194
The top of the world
at the end of winter.
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00:09:22,194 --> 00:09:27,332
♪ ♪
143
00:09:27,332 --> 00:09:29,702
[snort]
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In Alaska's extreme north,
a three-year-old caribou
145
00:09:33,972 --> 00:09:38,510
is starting her own journey
to become a parent.
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[snort]
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Five months pregnant,
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00:09:42,181 --> 00:09:46,885
she's scraping by on a diet
of frozen lichen.
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00:09:46,885 --> 00:09:50,890
♪ ♪
150
00:09:50,890 --> 00:09:54,927
Life as a caribou
is never lonely.
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00:09:54,927 --> 00:09:58,964
♪ ♪
152
00:09:58,964 --> 00:10:04,536
She's one
of a 100,000-strong herd,
153
00:10:04,536 --> 00:10:09,608
sticking close together
for good reason.
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00:10:09,608 --> 00:10:12,578
♪ ♪
155
00:10:12,578 --> 00:10:17,482
♪ ♪
156
00:10:17,482 --> 00:10:20,820
[howl]
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00:10:20,820 --> 00:10:24,390
She has her own wolves
to contend with.
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00:10:24,390 --> 00:10:29,094
[howling]
159
00:10:29,094 --> 00:10:33,165
The pack has had a long,
tough winter as well,
160
00:10:33,165 --> 00:10:34,700
and they're hungry.
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00:10:35,868 --> 00:10:41,707
♪ ♪
162
00:10:41,707 --> 00:10:44,476
To avoid becoming
their next meal,
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00:10:44,476 --> 00:10:47,112
she must stay vigilant.
164
00:10:47,112 --> 00:10:53,518
♪ ♪
165
00:10:53,518 --> 00:10:56,154
♪ ♪
166
00:10:56,154 --> 00:11:01,693
♪ ♪
167
00:11:01,693 --> 00:11:03,128
She sounds the alarm.
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00:11:03,128 --> 00:11:04,830
[bark]
169
00:11:04,830 --> 00:11:09,935
[caribou grunting]
170
00:11:09,935 --> 00:11:16,208
♪ ♪
171
00:11:16,208 --> 00:11:21,179
Heavily pregnant, she can't
risk getting left behind.
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00:11:21,179 --> 00:11:23,615
♪ ♪
173
00:11:23,615 --> 00:11:28,854
♪ ♪
174
00:11:28,854 --> 00:11:33,358
The wolves' strategy is
to run them into the ground.
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00:11:33,358 --> 00:11:35,961
♪ ♪
176
00:11:35,961 --> 00:11:40,432
♪ ♪
177
00:11:40,432 --> 00:11:44,036
[caribou grunting]
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00:11:44,036 --> 00:11:48,274
♪ ♪
179
00:11:48,274 --> 00:11:51,309
Those that stumble
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00:11:51,309 --> 00:11:53,445
won't last long.
181
00:11:53,445 --> 00:11:56,181
♪ ♪
182
00:11:56,181 --> 00:11:57,850
[bark]
183
00:11:57,850 --> 00:12:00,352
[birds cawing]
184
00:12:04,956 --> 00:12:10,662
One caribou can keep
the pack fed for days.
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00:12:10,662 --> 00:12:13,298
♪ ♪
186
00:12:13,298 --> 00:12:19,438
♪ ♪
187
00:12:19,438 --> 00:12:22,474
[grunting]
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Safely tucked within the herd,
189
00:12:25,578 --> 00:12:29,581
she sets off
on a 300-mile trek...
190
00:12:29,581 --> 00:12:34,753
♪ ♪
191
00:12:34,753 --> 00:12:37,622
...scaling the mighty
Brooks Range.
192
00:12:37,622 --> 00:12:40,258
♪ ♪
193
00:12:40,258 --> 00:12:45,764
♪ ♪
194
00:12:45,764 --> 00:12:48,500
At 9,000 feet,
195
00:12:48,500 --> 00:12:51,203
the Arctic's highest mountains.
196
00:12:51,203 --> 00:12:54,206
♪ ♪
197
00:12:54,206 --> 00:12:58,110
She needs to make it to the
rich grasslands of the north...
198
00:12:58,110 --> 00:13:01,614
♪ ♪
199
00:13:01,614 --> 00:13:06,051
...where she can raise
her unborn calf.
200
00:13:06,051 --> 00:13:07,419
[grunt]
201
00:13:16,328 --> 00:13:21,299
The polar bear mom already has
two hungry mouths to feed.
202
00:13:21,299 --> 00:13:25,070
♪ ♪
203
00:13:25,070 --> 00:13:29,141
The next four months
are make or break.
204
00:13:29,141 --> 00:13:35,280
♪ ♪
205
00:13:35,280 --> 00:13:38,150
If she doesn't find
enough to eat,
206
00:13:38,150 --> 00:13:41,319
her cubs might not see
their first birthday.
207
00:13:41,319 --> 00:13:46,058
♪ ♪
208
00:13:46,058 --> 00:13:50,229
But this ice bear
is in her element.
209
00:13:52,063 --> 00:13:54,132
Over the spring and summer,
210
00:13:54,132 --> 00:13:59,037
she'll lead her cubs
nearly 2,000 miles
211
00:13:59,037 --> 00:14:02,040
across the frozen Hudson Bay
212
00:14:02,040 --> 00:14:05,677
to find the food
that they need to survive.
213
00:14:05,677 --> 00:14:11,817
♪ ♪
214
00:14:11,817 --> 00:14:15,988
Sea ice forms
the perfect hunting ground.
215
00:14:19,057 --> 00:14:23,395
She can smell a seal
from 20 miles away.
216
00:14:23,395 --> 00:14:29,167
♪ ♪
217
00:14:29,167 --> 00:14:31,236
[thud]
218
00:14:31,236 --> 00:14:33,672
♪ ♪
219
00:14:33,672 --> 00:14:39,778
♪ ♪
220
00:14:39,778 --> 00:14:43,548
Success relies on patience...
221
00:14:43,548 --> 00:14:46,050
♪ ♪
222
00:14:46,050 --> 00:14:49,588
...and explosive speed.
223
00:14:51,323 --> 00:14:53,158
[seal yelps]
224
00:14:57,262 --> 00:14:59,698
♪ ♪
225
00:14:59,698 --> 00:15:01,433
[cub roars]
226
00:15:02,835 --> 00:15:05,470
Hunting season is short.
227
00:15:05,470 --> 00:15:08,908
♪ ♪
228
00:15:08,908 --> 00:15:11,944
If she's to get her cubs
through the summer,
229
00:15:11,944 --> 00:15:16,348
mom must catch
every seal she can.
230
00:15:16,348 --> 00:15:18,783
♪ ♪
231
00:15:18,783 --> 00:15:25,724
♪ ♪
232
00:15:25,724 --> 00:15:27,459
[chime]
233
00:15:27,459 --> 00:15:30,328
♪ ♪
234
00:15:30,328 --> 00:15:31,563
[chime]
235
00:15:31,563 --> 00:15:34,800
Long days and gentle warmth
236
00:15:34,800 --> 00:15:37,235
melt the ice and snow...
237
00:15:37,235 --> 00:15:41,673
♪ ♪
238
00:15:41,673 --> 00:15:45,544
...transforming the remote
Arctic islands of Svalbard.
239
00:15:47,545 --> 00:15:49,981
[birds chattering]
240
00:15:49,981 --> 00:15:56,421
[birds chattering]
241
00:15:56,421 --> 00:15:58,356
♪ ♪
242
00:15:58,356 --> 00:16:02,961
The fox couple swap
their warm winter whites...
243
00:16:02,961 --> 00:16:04,029
[screech]
244
00:16:04,029 --> 00:16:06,498
...for cool summer coats.
245
00:16:06,498 --> 00:16:10,970
♪ ♪
246
00:16:10,970 --> 00:16:14,939
And they have five
hungry new mouths to feed.
247
00:16:14,939 --> 00:16:17,575
[shrieking]
248
00:16:17,575 --> 00:16:24,483
[shrieking]
249
00:16:25,550 --> 00:16:32,391
Male arctic foxes make
the most devoted dads,
250
00:16:32,391 --> 00:16:36,762
working tirelessly
to put food on the table.
251
00:16:38,764 --> 00:16:41,799
[chirping]
252
00:16:41,799 --> 00:16:43,068
The millions of little auks
253
00:16:43,068 --> 00:16:46,038
that have crossed
the Arctic Ocean to be here
254
00:16:46,038 --> 00:16:49,074
could feed his family
for months,
255
00:16:49,074 --> 00:16:53,578
if he can catch them
nesting among the boulders.
256
00:16:53,578 --> 00:16:59,017
[birds chattering]
257
00:16:59,017 --> 00:17:04,890
[birds chattering]
258
00:17:04,890 --> 00:17:08,626
[sniffing]
259
00:17:08,626 --> 00:17:12,497
[chattering]
260
00:17:12,497 --> 00:17:14,365
[wings fluttering]
261
00:17:14,365 --> 00:17:18,103
He's always one step behind.
262
00:17:18,103 --> 00:17:20,739
[sniffing]
263
00:17:20,739 --> 00:17:22,941
[chattering]
264
00:17:22,941 --> 00:17:25,844
[wings fluttering]
265
00:17:25,844 --> 00:17:28,480
They're giving him
the runaround.
266
00:17:28,480 --> 00:17:30,882
[chattering]
267
00:17:30,882 --> 00:17:32,884
♪ ♪
268
00:17:32,884 --> 00:17:34,853
[chattering]
269
00:17:34,853 --> 00:17:38,290
♪ ♪
270
00:17:38,290 --> 00:17:40,925
He just can't get
his paws on them.
271
00:17:40,925 --> 00:17:43,729
[chattering]
272
00:17:45,898 --> 00:17:48,132
To feed his pups,
273
00:17:48,132 --> 00:17:51,970
he needs to work smarter,
not harder.
274
00:17:51,970 --> 00:17:58,610
♪ ♪
275
00:17:58,610 --> 00:18:00,412
[chattering]
276
00:18:00,412 --> 00:18:03,848
♪ ♪
277
00:18:03,848 --> 00:18:10,455
♪ ♪
278
00:18:10,455 --> 00:18:17,028
♪ ♪
279
00:18:17,028 --> 00:18:19,164
A good start.
280
00:18:22,534 --> 00:18:27,739
Still not enough
for a growing family
281
00:18:27,739 --> 00:18:31,210
who needs to fatten up
over the short summer months.
282
00:18:41,353 --> 00:18:44,556
Seasons change fast
in the Arctic.
283
00:18:44,556 --> 00:18:47,592
♪ ♪
284
00:18:47,592 --> 00:18:53,031
♪ ♪
285
00:18:53,031 --> 00:18:59,838
♪ ♪
286
00:18:59,838 --> 00:19:04,142
The caribou mom-to-be
is running with her herd...
287
00:19:04,142 --> 00:19:06,744
[chattering]
288
00:19:06,744 --> 00:19:09,715
[caribou grunting]
289
00:19:11,449 --> 00:19:15,120
...following ancient pathways
290
00:19:15,120 --> 00:19:18,923
as they have
for over 50,000 years.
291
00:19:18,923 --> 00:19:22,494
♪ ♪
292
00:19:22,494 --> 00:19:27,599
Along with half a million other
females across North America,
293
00:19:27,599 --> 00:19:31,269
she's nearing her
ancestral calving grounds
294
00:19:31,269 --> 00:19:34,506
300 miles to the north.
295
00:19:34,506 --> 00:19:39,477
♪ ♪
296
00:19:39,477 --> 00:19:42,848
Reaching grasslands
packed with superfoods...
297
00:19:45,717 --> 00:19:48,920
...just when she
needs them most.
298
00:19:48,920 --> 00:19:51,556
♪ ♪
299
00:19:51,556 --> 00:19:56,928
♪ ♪
300
00:19:56,928 --> 00:20:00,566
She's eating for two.
301
00:20:03,634 --> 00:20:08,507
Her newborn calf,
just days old.
302
00:20:10,975 --> 00:20:12,210
[grunt]
303
00:20:12,210 --> 00:20:15,947
She's totally dependent
on her mom.
304
00:20:15,947 --> 00:20:17,782
[grunt]
305
00:20:17,782 --> 00:20:21,219
♪ ♪
306
00:20:21,219 --> 00:20:27,392
♪ ♪
307
00:20:27,392 --> 00:20:31,696
Soon, she'll need to lead
this little one
308
00:20:31,696 --> 00:20:35,367
across thousands of miles
of tundra.
309
00:20:38,870 --> 00:20:40,171
But first...
310
00:20:40,171 --> 00:20:44,443
♪ ♪
311
00:20:44,443 --> 00:20:49,080
...her calf has to find
her snow legs.
312
00:20:49,080 --> 00:20:51,716
♪ ♪
313
00:20:51,716 --> 00:20:58,223
♪ ♪
314
00:20:58,223 --> 00:21:05,197
♪ ♪
315
00:21:05,197 --> 00:21:07,866
And just in time.
316
00:21:07,866 --> 00:21:13,204
♪ ♪
317
00:21:13,204 --> 00:21:16,541
Trouble's brewing
beneath their feet.
318
00:21:16,541 --> 00:21:22,280
♪ ♪
319
00:21:22,280 --> 00:21:25,383
Mosquitoes that
spend the winter
320
00:21:25,383 --> 00:21:29,020
in a state of suspended
animation under the snow
321
00:21:29,020 --> 00:21:30,922
are emerging.
322
00:21:34,326 --> 00:21:40,431
[buzzing]
323
00:21:40,431 --> 00:21:42,700
As the planet warms,
324
00:21:42,700 --> 00:21:47,839
an earlier spring
supercharges the swarm.
325
00:21:47,839 --> 00:21:52,610
[buzzing]
326
00:21:52,610 --> 00:21:57,882
Caribou can lose half a pint
of blood in a day.
327
00:21:57,882 --> 00:22:03,655
♪ ♪
328
00:22:03,655 --> 00:22:08,360
One in four calves die
during this first month.
329
00:22:08,360 --> 00:22:12,664
[buzzing]
330
00:22:12,664 --> 00:22:16,467
But mom's been here before
331
00:22:16,467 --> 00:22:19,170
and knows a way out.
332
00:22:19,170 --> 00:22:25,877
♪ ♪
333
00:22:25,877 --> 00:22:29,614
[calf grunting]
334
00:22:31,115 --> 00:22:33,751
They join a mass exodus...
335
00:22:33,751 --> 00:22:36,454
♪ ♪
336
00:22:36,454 --> 00:22:40,425
...to the mountains,
337
00:22:40,425 --> 00:22:44,596
where cool winds keep
biting insects at bay.
338
00:22:44,596 --> 00:22:47,031
♪ ♪
339
00:22:47,031 --> 00:22:51,502
♪ ♪
340
00:22:51,502 --> 00:22:54,873
But up here, food is scarce.
341
00:22:56,207 --> 00:22:58,777
They can't stay for long.
342
00:23:11,222 --> 00:23:13,357
For every Arctic parent,
343
00:23:13,357 --> 00:23:17,262
the quest for food
can mean life or death.
344
00:23:17,262 --> 00:23:20,932
[sniffing]
345
00:23:20,932 --> 00:23:24,903
♪ ♪
346
00:23:24,903 --> 00:23:28,973
Only one of the polar bear's
cubs has made it.
347
00:23:28,973 --> 00:23:35,012
♪ ♪
348
00:23:35,012 --> 00:23:40,718
The other, most likely
lost to starvation.
349
00:23:40,718 --> 00:23:46,157
♪ ♪
350
00:23:46,157 --> 00:23:51,262
♪ ♪
351
00:23:51,262 --> 00:23:57,235
Even the most dedicated parent
sometimes struggles to provide.
352
00:23:57,235 --> 00:24:01,740
♪ ♪
353
00:24:01,740 --> 00:24:05,009
Mom can't afford
to lose them both.
354
00:24:05,009 --> 00:24:08,379
♪ ♪
355
00:24:08,379 --> 00:24:10,181
[squeak]
356
00:24:10,181 --> 00:24:16,020
♪ ♪
357
00:24:16,020 --> 00:24:19,924
But her world is
melting around her.
358
00:24:19,924 --> 00:24:22,360
♪ ♪
359
00:24:22,360 --> 00:24:29,000
♪ ♪
360
00:24:29,000 --> 00:24:35,306
♪ ♪
361
00:24:35,306 --> 00:24:41,145
As a last resort, she tries
to hunt from the water.
362
00:24:41,145 --> 00:24:45,283
♪ ♪
363
00:24:45,283 --> 00:24:52,290
♪ ♪
364
00:24:52,290 --> 00:24:59,297
♪ ♪
365
00:24:59,297 --> 00:25:06,304
♪ ♪
366
00:25:06,304 --> 00:25:13,311
♪ ♪
367
00:25:13,311 --> 00:25:15,146
[snort]
368
00:25:15,146 --> 00:25:17,782
♪ ♪
369
00:25:17,782 --> 00:25:22,320
♪ ♪
370
00:25:22,320 --> 00:25:23,855
[roar]
371
00:25:31,429 --> 00:25:35,399
Just one in 10 hunts
is successful.
372
00:25:35,399 --> 00:25:40,305
♪ ♪
373
00:25:40,305 --> 00:25:43,441
And it's only getting harder.
374
00:25:43,441 --> 00:25:49,147
♪ ♪
375
00:25:49,147 --> 00:25:51,315
With the Arctic warming
twice as fast
376
00:25:51,315 --> 00:25:54,286
as the rest of the planet,
377
00:25:54,286 --> 00:25:59,890
Hudson Bay is melting earlier
year on year,
378
00:25:59,890 --> 00:26:04,562
shortening her hunting season
by up to a month.
379
00:26:04,562 --> 00:26:06,164
♪ ♪
380
00:26:06,164 --> 00:26:12,971
♪ ♪
381
00:26:12,971 --> 00:26:17,208
It's time to cut their losses
382
00:26:17,208 --> 00:26:19,343
and head back to land.
383
00:26:19,343 --> 00:26:21,479
[cub cries]
384
00:26:21,479 --> 00:26:26,751
♪ ♪
385
00:26:26,751 --> 00:26:31,055
They walked here,
386
00:26:31,055 --> 00:26:36,594
but a 100-mile swim for her cub
is out of the question.
387
00:26:36,594 --> 00:26:39,096
♪ ♪
388
00:26:39,096 --> 00:26:45,069
♪ ♪
389
00:26:45,069 --> 00:26:51,008
So, mom hitches a ride
on her very own life raft.
390
00:26:51,008 --> 00:26:56,480
♪ ♪
391
00:26:56,480 --> 00:26:59,717
By sensing the movement
of the ice,
392
00:26:59,717 --> 00:27:04,055
she knows she's heading
back to shore.
393
00:27:04,055 --> 00:27:06,490
♪ ♪
394
00:27:06,490 --> 00:27:13,197
♪ ♪
395
00:27:13,197 --> 00:27:15,233
[cub groans]
396
00:27:17,034 --> 00:27:20,037
♪ ♪
397
00:27:20,037 --> 00:27:25,109
A chance to lie back and let
the current do the work.
398
00:27:25,109 --> 00:27:27,545
♪ ♪
399
00:27:27,545 --> 00:27:32,416
♪ ♪
400
00:27:32,416 --> 00:27:33,952
[cub groans]
401
00:27:37,421 --> 00:27:41,793
[birds squawking]
402
00:27:41,793 --> 00:27:43,862
For some Arctic parents,
403
00:27:43,862 --> 00:27:48,166
the summer melt is
the start of leaner times.
404
00:27:50,001 --> 00:27:51,269
[bark]
405
00:27:51,269 --> 00:27:56,974
But for others, it brings
all the food they can eat.
406
00:27:56,974 --> 00:27:58,376
[bark]
407
00:27:59,944 --> 00:28:03,981
The arctic fox dad has
his pups to look out for.
408
00:28:03,981 --> 00:28:10,388
♪ ♪
409
00:28:10,388 --> 00:28:13,157
It's why he made his journey
to raise them
410
00:28:13,157 --> 00:28:19,063
in exactly the right place
at exactly the right time.
411
00:28:19,063 --> 00:28:22,500
♪ ♪
412
00:28:22,500 --> 00:28:28,740
♪ ♪
413
00:28:28,740 --> 00:28:32,711
High above on the dizzying
sea cliffs...
414
00:28:34,712 --> 00:28:38,148
...murre chicks
are ready to fledge
415
00:28:38,148 --> 00:28:42,653
and about to start
their own migration.
416
00:28:42,653 --> 00:28:44,556
[chirping]
417
00:28:44,556 --> 00:28:49,360
But at just three weeks old,
they still can't fly.
418
00:28:49,360 --> 00:28:53,497
[chirping]
419
00:28:53,497 --> 00:28:55,800
Over 1,000 feet up,
420
00:28:55,800 --> 00:29:00,938
there's only one way down
to the ocean below,
421
00:29:00,938 --> 00:29:04,476
nearly half a mile away.
422
00:29:07,878 --> 00:29:12,183
Their parents believe
in tough love.
423
00:29:15,119 --> 00:29:19,757
Time for a little
gentle encouragement.
424
00:29:19,757 --> 00:29:24,395
♪ ♪
425
00:29:24,395 --> 00:29:31,135
♪ ♪
426
00:29:31,135 --> 00:29:38,142
♪ ♪
427
00:29:38,142 --> 00:29:42,147
[squawking]
428
00:29:44,749 --> 00:29:45,750
Out of reach.
429
00:29:45,750 --> 00:29:47,618
[chirping]
430
00:29:47,618 --> 00:29:51,021
But over a few short days,
431
00:29:51,021 --> 00:29:54,659
thousands of first-time
skydivers make the leap.
432
00:29:54,659 --> 00:29:57,896
[chirping]
433
00:30:00,264 --> 00:30:01,799
Some...
434
00:30:01,799 --> 00:30:04,169
[chirping]
435
00:30:04,169 --> 00:30:06,370
...fall short.
436
00:30:06,370 --> 00:30:09,673
[chirping]
437
00:30:09,673 --> 00:30:12,576
This is dad's big chance.
438
00:30:12,576 --> 00:30:16,146
♪ ♪
439
00:30:16,146 --> 00:30:18,916
But with so many
to choose from,
440
00:30:18,916 --> 00:30:21,685
he doesn't know
which way to turn.
441
00:30:21,685 --> 00:30:24,321
♪ ♪
442
00:30:24,321 --> 00:30:29,727
♪ ♪
443
00:30:29,727 --> 00:30:36,233
♪ ♪
444
00:30:36,233 --> 00:30:38,636
They're faster than they look.
445
00:30:38,636 --> 00:30:41,272
♪ ♪
446
00:30:41,272 --> 00:30:46,143
♪ ♪
447
00:30:46,143 --> 00:30:49,080
His pups are relying on him;
448
00:30:49,080 --> 00:30:51,382
the pressure is on.
449
00:30:51,382 --> 00:30:55,352
♪ ♪
450
00:30:55,352 --> 00:31:02,193
♪ ♪
451
00:31:02,193 --> 00:31:03,761
[growling]
452
00:31:03,761 --> 00:31:07,365
[chirping]
453
00:31:07,365 --> 00:31:08,799
Got one.
454
00:31:08,799 --> 00:31:13,337
♪ ♪
455
00:31:13,337 --> 00:31:18,643
He'll need to catch
bird after bird while he can
456
00:31:18,643 --> 00:31:20,478
to feed his hungry pups.
457
00:31:23,247 --> 00:31:28,853
[chirping]
458
00:31:28,853 --> 00:31:33,624
♪ ♪
459
00:31:33,624 --> 00:31:34,892
[sniffing]
460
00:31:34,892 --> 00:31:38,162
Finally, he's on a roll.
461
00:31:46,237 --> 00:31:49,407
[chirping]
462
00:31:49,407 --> 00:31:52,042
High above,
463
00:31:52,042 --> 00:31:54,445
one of the last to go.
464
00:31:54,445 --> 00:31:56,881
♪ ♪
465
00:31:56,881 --> 00:32:01,886
♪ ♪
466
00:32:01,886 --> 00:32:04,688
[chirping]
467
00:32:04,688 --> 00:32:11,194
♪ ♪
468
00:32:11,194 --> 00:32:13,931
But dad's right behind him.
469
00:32:13,931 --> 00:32:16,567
♪ ♪
470
00:32:16,567 --> 00:32:22,706
♪ ♪
471
00:32:22,706 --> 00:32:24,909
Even helping out a bit.
472
00:32:24,909 --> 00:32:27,545
♪ ♪
473
00:32:27,545 --> 00:32:33,184
♪ ♪
474
00:32:33,184 --> 00:32:39,057
♪ ♪
475
00:32:39,057 --> 00:32:44,228
Wings found, now he's got
to stay on course.
476
00:32:44,228 --> 00:32:46,664
♪ ♪
477
00:32:46,664 --> 00:32:52,303
♪ ♪
478
00:32:52,303 --> 00:32:58,642
♪ ♪
479
00:32:58,642 --> 00:33:00,311
[squawk]
480
00:33:00,311 --> 00:33:07,451
♪ ♪
481
00:33:07,451 --> 00:33:10,721
[chirping]
482
00:33:10,721 --> 00:33:17,628
He's starting a 2,000-mile
Arctic voyage of his own.
483
00:33:17,628 --> 00:33:20,598
[chirping]
484
00:33:20,598 --> 00:33:24,301
There's always one
that gets away.
485
00:33:24,301 --> 00:33:28,672
♪ ♪
486
00:33:28,672 --> 00:33:31,442
Every Arctic parent has to do
whatever it takes
487
00:33:31,442 --> 00:33:33,378
to raise the next generation.
488
00:33:37,281 --> 00:33:40,951
The fox dad making sure
his pups have enough food
489
00:33:40,951 --> 00:33:44,455
to prepare them
for their life ahead.
490
00:33:46,524 --> 00:33:49,127
[gentle snoring]
491
00:33:52,696 --> 00:33:59,170
♪ ♪
492
00:33:59,170 --> 00:34:02,172
At the height of summer,
493
00:34:02,172 --> 00:34:04,975
the caribou mom is
finally within reach
494
00:34:04,975 --> 00:34:09,847
of the rich pastures she needs
to secure her calf's future.
495
00:34:09,847 --> 00:34:12,483
♪ ♪
496
00:34:12,483 --> 00:34:18,823
♪ ♪
497
00:34:18,823 --> 00:34:22,859
But in her way,
498
00:34:22,859 --> 00:34:25,363
in the valleys below,
499
00:34:25,363 --> 00:34:28,966
rivers swelling
with meltwater.
500
00:34:28,966 --> 00:34:33,437
[grunting]
501
00:34:33,437 --> 00:34:37,708
It's a danger they've not yet
had to face together.
502
00:34:43,047 --> 00:34:48,652
♪ ♪
503
00:34:48,652 --> 00:34:54,692
♪ ♪
504
00:34:54,692 --> 00:35:00,097
Mom knows it's best
to stick with the herd,
505
00:35:00,097 --> 00:35:03,767
seeking shelter
from the current.
506
00:35:03,767 --> 00:35:09,273
♪ ♪
507
00:35:09,273 --> 00:35:13,444
But it's her calf's first time
in deep water.
508
00:35:13,444 --> 00:35:15,879
♪ ♪
509
00:35:15,879 --> 00:35:21,985
♪ ♪
510
00:35:21,985 --> 00:35:25,756
And this river is powerful.
511
00:35:25,756 --> 00:35:32,363
♪ ♪
512
00:35:32,363 --> 00:35:39,136
♪ ♪
513
00:35:39,136 --> 00:35:42,440
♪ ♪
514
00:35:46,143 --> 00:35:50,514
[grunting]
515
00:35:50,514 --> 00:35:55,853
♪ ♪
516
00:35:55,853 --> 00:36:01,525
It's a parent's worst nightmare
to lose sight of their child.
517
00:36:01,525 --> 00:36:05,963
♪ ♪
518
00:36:05,963 --> 00:36:11,736
♪ ♪
519
00:36:11,736 --> 00:36:13,737
[calf bleating]
520
00:36:13,737 --> 00:36:15,572
♪ ♪
521
00:36:15,572 --> 00:36:21,812
♪ ♪
522
00:36:21,812 --> 00:36:28,151
♪ ♪
523
00:36:28,151 --> 00:36:29,754
Dry land.
524
00:36:29,754 --> 00:36:35,526
[calf bleating]
525
00:36:35,526 --> 00:36:39,329
♪ ♪
526
00:36:39,329 --> 00:36:42,666
But they're still
only halfway across.
527
00:36:42,666 --> 00:36:47,071
♪ ♪
528
00:36:47,071 --> 00:36:48,772
[calf bleats]
529
00:36:48,772 --> 00:36:51,208
♪ ♪
530
00:36:51,208 --> 00:36:56,413
♪ ♪
531
00:36:56,413 --> 00:36:59,684
This time, mom sticks close
532
00:36:59,684 --> 00:37:03,554
to try and shield her exhausted
calf from the current.
533
00:37:03,554 --> 00:37:05,989
♪ ♪
534
00:37:05,989 --> 00:37:12,029
♪ ♪
535
00:37:12,029 --> 00:37:17,701
[calf bleating]
536
00:37:17,701 --> 00:37:19,737
[splash]
537
00:37:19,737 --> 00:37:23,174
[mom grunting]
538
00:37:23,174 --> 00:37:30,815
[calf bleating]
539
00:37:30,815 --> 00:37:32,916
[mom grunting]
540
00:37:32,916 --> 00:37:37,621
♪ ♪
541
00:37:37,621 --> 00:37:44,394
♪ ♪
542
00:37:44,394 --> 00:37:49,300
Mom is powerless to help.
543
00:37:49,300 --> 00:37:52,236
But they've come
this far together.
544
00:37:52,236 --> 00:37:54,872
She won't give up
on her calf now.
545
00:37:54,872 --> 00:37:59,209
[bleating, grunting]
546
00:37:59,209 --> 00:38:05,949
♪ ♪
547
00:38:05,949 --> 00:38:12,956
♪ ♪
548
00:38:12,956 --> 00:38:19,964
♪ ♪
549
00:38:19,964 --> 00:38:24,601
[bleating]
550
00:38:24,601 --> 00:38:31,008
♪ ♪
551
00:38:31,008 --> 00:38:35,146
Time to pick up the pace
552
00:38:35,146 --> 00:38:38,315
and rejoin the safety
of the herd.
553
00:38:38,315 --> 00:38:45,322
♪ ♪
554
00:38:45,322 --> 00:38:52,329
♪ ♪
555
00:38:52,329 --> 00:38:55,966
There's enough food here
to sustain them
556
00:38:55,966 --> 00:38:58,101
until the beginning of winter.
557
00:38:58,101 --> 00:39:03,908
♪ ♪
558
00:39:03,908 --> 00:39:08,746
This caribou mom
has done her job,
559
00:39:08,746 --> 00:39:12,349
teaching her calf
how to make a journey
560
00:39:12,349 --> 00:39:15,619
that will now become
her way of life.
561
00:39:15,619 --> 00:39:19,256
♪ ♪
562
00:39:19,256 --> 00:39:22,927
♪ ♪
563
00:39:27,064 --> 00:39:31,234
♪ ♪
564
00:39:31,234 --> 00:39:36,907
♪ ♪
565
00:39:36,907 --> 00:39:42,980
The polar bear mom is also
nearing the end of her journey.
566
00:39:42,980 --> 00:39:47,017
She's so close,
she can smell the land.
567
00:39:47,017 --> 00:39:50,621
♪ ♪
568
00:39:50,621 --> 00:39:57,127
♪ ♪
569
00:39:57,127 --> 00:40:04,134
♪ ♪
570
00:40:04,134 --> 00:40:06,904
Just one more short swim...
571
00:40:09,172 --> 00:40:11,742
...through dangerous waters.
572
00:40:11,742 --> 00:40:16,746
♪ ♪
573
00:40:16,746 --> 00:40:18,682
Heavyweight males have already
574
00:40:18,682 --> 00:40:21,218
been forced
off the melting ice.
575
00:40:21,218 --> 00:40:24,354
♪ ♪
576
00:40:24,354 --> 00:40:30,727
♪ ♪
577
00:40:30,727 --> 00:40:36,066
They're on the lookout
for an easy meal,
578
00:40:36,066 --> 00:40:38,101
like a bear cub.
579
00:40:38,101 --> 00:40:41,138
♪ ♪
580
00:40:41,138 --> 00:40:45,776
♪ ♪
581
00:40:45,776 --> 00:40:52,683
♪ ♪
582
00:40:57,655 --> 00:41:02,159
Luckily, there's something
more substantial on the menu.
583
00:41:06,430 --> 00:41:09,266
Beluga whales.
584
00:41:09,266 --> 00:41:10,668
[blows air]
585
00:41:12,336 --> 00:41:14,104
[blowing]
586
00:41:14,104 --> 00:41:17,841
Every year thousands
come to this bay
587
00:41:17,841 --> 00:41:22,279
to give birth, feed,
and socialize.
588
00:41:22,279 --> 00:41:26,550
♪ ♪
589
00:41:26,550 --> 00:41:27,951
[blowing]
590
00:41:27,951 --> 00:41:32,589
These ingenious bears have
learned a new hunting technique
591
00:41:32,589 --> 00:41:35,626
to make the most
of this opportunity.
592
00:41:37,394 --> 00:41:40,030
Waiting on giant rocks...
593
00:41:40,030 --> 00:41:43,533
♪ ♪
594
00:41:43,533 --> 00:41:45,970
...to launch their ambush.
595
00:41:52,543 --> 00:41:56,546
[grunting]
596
00:41:56,546 --> 00:41:59,182
It keeps them distracted...
597
00:41:59,182 --> 00:42:02,519
♪ ♪
598
00:42:02,519 --> 00:42:07,090
...allowing mom and cub
to make it to shore.
599
00:42:07,090 --> 00:42:09,793
♪ ♪
600
00:42:09,793 --> 00:42:16,299
♪ ♪
601
00:42:16,299 --> 00:42:22,739
Her first instinct is to head
for the safety of home,
602
00:42:22,739 --> 00:42:26,409
back to where it all began.
603
00:42:26,409 --> 00:42:30,313
♪ ♪
604
00:42:30,313 --> 00:42:34,952
But the smell of a fresh kill
is too much to resist.
605
00:42:34,952 --> 00:42:37,721
[roaring]
606
00:42:40,891 --> 00:42:43,827
It forces her
to make a tough call...
607
00:42:43,827 --> 00:42:46,897
♪ ♪
608
00:42:46,897 --> 00:42:50,000
...and head into danger.
609
00:42:50,000 --> 00:42:51,402
[roar]
610
00:42:51,402 --> 00:42:56,973
[seagulls squawking]
611
00:42:56,973 --> 00:43:03,313
♪ ♪
612
00:43:03,313 --> 00:43:08,218
[roaring]
613
00:43:08,218 --> 00:43:10,854
[grunting]
614
00:43:10,854 --> 00:43:14,691
♪ ♪
615
00:43:14,691 --> 00:43:16,927
She stands her ground...
616
00:43:16,927 --> 00:43:20,163
[roaring]
617
00:43:20,163 --> 00:43:26,570
♪ ♪
618
00:43:26,570 --> 00:43:29,072
[roar]
619
00:43:29,072 --> 00:43:33,577
...and steals what could be
their last meal in months.
620
00:43:33,577 --> 00:43:39,249
♪ ♪
621
00:43:39,249 --> 00:43:41,418
[growl]
622
00:43:41,418 --> 00:43:46,489
Now starts the final leg
of their journey inland.
623
00:43:46,489 --> 00:43:53,496
♪ ♪
624
00:43:53,496 --> 00:43:56,166
After a 2,000-mile trek
625
00:43:56,166 --> 00:43:59,003
and teaching her cub
how to navigate
626
00:43:59,003 --> 00:44:02,372
one of the world's
most treacherous landscapes...
627
00:44:02,372 --> 00:44:06,343
♪ ♪
628
00:44:06,343 --> 00:44:08,011
...she's home.
629
00:44:08,011 --> 00:44:12,549
♪ ♪
630
00:44:12,549 --> 00:44:15,352
Raising a family is never easy.
631
00:44:15,352 --> 00:44:19,155
♪ ♪
632
00:44:19,155 --> 00:44:22,659
They'll spend the next
two years traveling,
633
00:44:22,659 --> 00:44:25,462
facing every challenge
together.
634
00:44:25,462 --> 00:44:28,098
♪ ♪
635
00:44:28,098 --> 00:44:33,470
♪ ♪
636
00:44:33,470 --> 00:44:39,876
This mom doing everything
she can for her cub
637
00:44:39,876 --> 00:44:44,147
in one of the toughest places
to be a parent.
638
00:44:44,147 --> 00:44:47,284
♪ ♪
639
00:44:47,284 --> 00:44:53,357
♪ ♪
36117
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