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Asia - the largest
of all the Earth's continents.
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00:00:42,480 --> 00:00:47,640
It stretches from the equator
to beyond the Arctic Circle.
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00:00:50,040 --> 00:00:53,520
This is a continent of extremes.
4
00:00:57,920 --> 00:01:03,680
Here, temperatures can drop
to below minus 60 degrees Celsius.
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00:01:05,720 --> 00:01:08,560
On land, survival is almost impossible.
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00:01:11,480 --> 00:01:14,240
But for a few weeks in summer,
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00:01:14,280 --> 00:01:18,480
the ice melts
and the coast is transformed.
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00:01:28,840 --> 00:01:32,600
This is one of the biggest gatherings
of mammals
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00:01:32,640 --> 00:01:36,040
to be found anywhere on Earth.
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00:02:27,600 --> 00:02:30,200
These are Pacific walrus.
11
00:02:31,440 --> 00:02:35,040
For most of the year
they feed out in the Arctic Ocean,
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00:02:35,080 --> 00:02:37,560
emerging to rest on the sea ice.
13
00:02:39,760 --> 00:02:43,480
But now climate change has
melted the ice here,
14
00:02:43,520 --> 00:02:47,840
and the only place within reach of
their feeding grounds where they can rest
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00:02:47,880 --> 00:02:50,920
are a few beaches, such as this one.
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00:02:53,720 --> 00:02:59,160
100,000 of them, almost the entire
world population, are here.
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00:03:04,000 --> 00:03:05,960
They are gigantic.
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00:03:06,000 --> 00:03:09,560
A male can weigh over a tonne...
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00:03:09,600 --> 00:03:11,640
(ALL GRUNT)
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00:03:13,320 --> 00:03:16,400
...and many die in the scrum.
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00:03:27,320 --> 00:03:32,280
On a beach, 250 miles to the west,
there's a further danger.
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00:03:37,320 --> 00:03:38,640
Polar bears.
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00:03:45,440 --> 00:03:51,240
They, too, have been forced to spend more
time ashore by the dwindling ice.
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00:04:00,000 --> 00:04:03,840
And now they're very hungry.
25
00:04:25,240 --> 00:04:31,880
But adult walrus are tough,
well armed and agile in water,
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00:04:31,920 --> 00:04:34,880
and could fatally injure the bear.
27
00:04:37,680 --> 00:04:38,840
He's failed.
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00:04:47,920 --> 00:04:51,640
The narrow beaches here
are backed by cliffs...
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00:04:54,520 --> 00:04:59,560
...and some walrus scramble up them,
escaping the crowd.
30
00:05:22,840 --> 00:05:27,920
At the top,
they are 80 metres above the beach...
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00:05:30,760 --> 00:05:35,080
...but this is not a place
where a walrus should be.
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00:05:38,040 --> 00:05:41,520
Nor are they the only ones
to have found it.
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00:05:44,200 --> 00:05:46,320
The bears have got up here too.
34
00:06:02,120 --> 00:06:06,120
The walrus's instinct
is to find safety in the water.
35
00:06:11,360 --> 00:06:13,640
They can still smell the sea.
36
00:06:20,400 --> 00:06:21,920
And they can hear it.
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00:06:31,120 --> 00:06:35,680
Just the polar bear's presence
is enough to spook the walrus.
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00:06:50,960 --> 00:06:55,280
Many walrus that climb the cliffs
never make it back to the ocean.
39
00:06:58,640 --> 00:07:01,160
Even once the polar bears have moved on,
40
00:07:01,200 --> 00:07:06,640
the walrus need to return to the sea,
and some take the nearest way to do so.
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00:07:22,120 --> 00:07:24,560
As one crashes on the rocks,
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00:07:24,600 --> 00:07:28,920
those on the beach stampede
and more lives are lost.
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00:08:04,280 --> 00:08:09,200
In the course of just a few days,
over 200 walrus die.
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00:08:27,240 --> 00:08:30,360
Now the polar bears can feed
on the carcasses.
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00:08:42,360 --> 00:08:45,960
These events only occur
once every few years,
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00:08:46,000 --> 00:08:49,960
but as the world warms
and the ice retreats still further,
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they may become more frequent.
48
00:08:56,040 --> 00:09:00,280
Inland, the ground is gripped by winter
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00:09:00,320 --> 00:09:03,160
for six months of the year.
50
00:09:05,360 --> 00:09:11,000
Two million square miles of northern
Russia are locked beneath the ice.
51
00:09:14,080 --> 00:09:18,880
But even so, some creatures have
managed to make their homes here.
52
00:09:20,960 --> 00:09:24,640
They leave evidence
of their presence in the snow.
53
00:09:27,360 --> 00:09:31,360
These tracks all lead in one direction.
54
00:10:02,880 --> 00:10:07,960
Kamchatka has the highest density
of active volcanoes on the planet.
55
00:10:09,600 --> 00:10:14,200
Temperatures underground
reach 250 degrees Celsius...
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00:10:15,360 --> 00:10:19,440
...pushing up cauldrons of boiling mud
and clouds of steam...
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00:10:21,920 --> 00:10:24,000
...but in spite of the dangers,
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00:10:24,040 --> 00:10:27,920
some creatures travel long distances
to visit the area.
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00:10:39,320 --> 00:10:41,360
A Kamchatka brown bear.
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00:10:43,320 --> 00:10:47,120
He spent the long winter
sleeping in a den below ground
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00:10:47,160 --> 00:10:49,960
and now he is extremely hungry.
62
00:10:55,040 --> 00:11:00,720
But finding food means getting dangerously
close to the scalding fountains.
63
00:11:09,040 --> 00:11:11,640
This is the only place
for many miles around
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00:11:11,680 --> 00:11:16,520
where a bear can reach grass that
is snow free, thanks to the hot earth.
65
00:11:29,040 --> 00:11:33,040
Putting a foot wrong here
could lead to real trouble,
66
00:11:33,080 --> 00:11:35,840
and bodies have been found of bears
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00:11:35,880 --> 00:11:39,560
that stumbled into the pools
and were scalded to death.
68
00:11:46,360 --> 00:11:48,520
And this bear is not alone.
69
00:11:57,680 --> 00:12:01,200
Brown bears, by and large,
are solitary creatures
70
00:12:01,240 --> 00:12:04,240
and this is one
of the few times of the year
71
00:12:04,280 --> 00:12:06,080
when they tolerate the presence of others.
72
00:12:12,040 --> 00:12:17,280
And now they are so well fed and relaxed
that they even have time to play.
73
00:12:38,080 --> 00:12:44,560
This volcanic spot has become
a warm oasis in Asia's frigid north.
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00:13:00,240 --> 00:13:05,240
Away from Arctic Russia,
Asia has the hottest deserts,
75
00:13:05,280 --> 00:13:10,040
highest mountains
and tallest jungles on our planet.
76
00:13:12,120 --> 00:13:15,280
This is a continent
of incredible variety...
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00:13:19,800 --> 00:13:21,880
...but it was not always so.
78
00:13:23,240 --> 00:13:25,880
Some 89 million years ago,
79
00:13:25,920 --> 00:13:32,160
India was an island lying away
to the south, but it drifted northwards,
80
00:13:32,200 --> 00:13:35,680
pushing up the sediments
between it and mainland Asia.
81
00:13:39,480 --> 00:13:41,640
Over millions of years,
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00:13:41,680 --> 00:13:47,600
the sediments lying between crumpled up
and rose to form the Himalayas.
83
00:14:02,120 --> 00:14:06,640
Now these are the tallest
mountains on the planet.
84
00:14:08,360 --> 00:14:11,280
They stand over five miles high.
85
00:14:15,480 --> 00:14:20,800
India is still moving northwards,
and these mountains are still rising.
86
00:14:29,560 --> 00:14:33,400
Asia's mountains stretch all the way
from Afghanistan,
87
00:14:33,440 --> 00:14:37,720
across northern India,
to here in central China.
88
00:14:41,120 --> 00:14:47,240
These are the mountains of Shennongjia,
among China's highest.
89
00:15:03,000 --> 00:15:08,360
The forests here were, until comparatively
recently, the least known in the world.
90
00:15:11,560 --> 00:15:16,480
Few outsiders had any idea of what
animals might be living in them.
91
00:15:34,400 --> 00:15:39,440
There were stories of human-like
monsters - yetis, abominable snowmen -
92
00:15:39,480 --> 00:15:42,800
who left strange footprints in the snow...
93
00:15:45,720 --> 00:15:47,640
...but little else.
94
00:15:51,040 --> 00:15:56,080
And indeed there are monkeys
living in these snowy forests,
95
00:15:56,120 --> 00:15:58,720
and they're very strange.
96
00:16:03,120 --> 00:16:07,080
Meet the blue-faced, golden-coated,
97
00:16:07,120 --> 00:16:10,520
snub-nosed snow monkey.
98
00:16:18,120 --> 00:16:21,320
They are among the heftiest of monkeys.
99
00:16:26,840 --> 00:16:30,440
Big animals keep warm more easily
than small ones,
100
00:16:30,480 --> 00:16:35,200
and they survive in colder conditions
than any other monkey on Earth.
101
00:16:38,760 --> 00:16:41,280
They all have snub noses.
102
00:16:42,440 --> 00:16:46,760
Perhaps prominent ones
would only too easily get frostbitten.
103
00:16:50,520 --> 00:16:55,600
The whole group huddles together at
the slightest opportunity to keep warm...
104
00:17:00,680 --> 00:17:02,400
...and who wouldn't?
105
00:17:20,160 --> 00:17:26,080
Even adults, if they get separated
from the group, can freeze to death.
106
00:17:39,720 --> 00:17:45,360
Now, in the depths of winter,
food is desperately hard to find.
107
00:17:51,520 --> 00:17:54,880
The head of the family leads them
to the edge of their territory
108
00:17:54,920 --> 00:17:56,960
in search of something to eat.
109
00:17:58,720 --> 00:18:03,200
The only food here
is wretchedly unnourishing -
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00:18:03,240 --> 00:18:07,040
bark, moss and lichen.
111
00:18:09,200 --> 00:18:13,360
There's hardly enough to
sustain one monkey, let alone a family.
112
00:18:17,320 --> 00:18:18,960
But they share it peaceably.
113
00:18:25,720 --> 00:18:29,800
Survival depends on the group
keeping together.
114
00:18:35,480 --> 00:18:39,000
In these mountains, any food is precious.
115
00:18:40,520 --> 00:18:43,600
(MONKEYS SCREECH)
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A rival group.
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00:18:54,040 --> 00:18:57,080
They, too, are searching for food.
118
00:19:05,840 --> 00:19:09,320
The two males go head to head.
119
00:19:09,360 --> 00:19:11,480
(MONKEYS SCREECH)
120
00:19:20,640 --> 00:19:21,960
(SQUEAKS)
121
00:19:40,520 --> 00:19:41,920
(SQUEAKS)
122
00:19:51,960 --> 00:19:54,440
And now the females join the fray.
123
00:19:54,480 --> 00:19:57,000
(MONKEYS SCREECH)
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00:20:08,040 --> 00:20:11,880
Outnumbered, the intruders retreat.
125
00:20:16,400 --> 00:20:18,560
Their leader is the last to go.
126
00:20:30,440 --> 00:20:33,880
The fight was over the smallest of meals,
127
00:20:33,920 --> 00:20:38,000
but it was ferocious nonetheless,
and the family is now scattered...
128
00:20:40,400 --> 00:20:42,320
...but they must stay together.
129
00:20:43,800 --> 00:20:46,760
The youngest are already badly chilled.
130
00:20:49,960 --> 00:20:50,960
(SQUEAKS)
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00:20:52,520 --> 00:20:57,520
She can see her father,
but has she the strength to reach him?
132
00:21:19,640 --> 00:21:20,640
(SQUEAKING)
133
00:21:34,200 --> 00:21:37,240
Back to safety and warmth.
134
00:21:47,480 --> 00:21:51,040
The huddle is the only source of warmth
135
00:21:51,080 --> 00:21:54,400
in these bleak, frozen forests.
136
00:22:15,760 --> 00:22:22,520
To the west of the Himalayas, in Iran,
lie some of the hottest deserts on Earth.
137
00:22:27,160 --> 00:22:30,080
This is the Lut Desert...
138
00:22:31,360 --> 00:22:35,440
...and here temperatures
can reach 70 degrees Celsius.
139
00:22:51,160 --> 00:22:56,120
The blisteringly hot rocks
and baking sands of Iran's deserts
140
00:22:56,160 --> 00:22:58,760
may appear totally lifeless...
141
00:23:02,760 --> 00:23:07,560
...but a few trees manage to grow
in the shade of the canyon walls...
142
00:23:10,760 --> 00:23:14,440
...and here at least
migrating birds passing through
143
00:23:14,480 --> 00:23:17,120
can stop for a little rest.
144
00:23:21,320 --> 00:23:22,680
A flycatcher.
145
00:23:25,080 --> 00:23:28,400
With luck, there might be
a meal of some kind here.
146
00:23:34,240 --> 00:23:37,680
There are spiders in the crevices.
147
00:23:37,720 --> 00:23:40,240
Not much, but worth having.
148
00:23:44,920 --> 00:23:47,720
And there's something moving up there.
149
00:24:30,720 --> 00:24:32,640
The bird was mistaken.
150
00:24:32,680 --> 00:24:36,400
It was a viper with a lethal bite.
151
00:24:48,760 --> 00:24:52,240
This species has only recently
been discovered
152
00:24:52,280 --> 00:24:56,600
and, so far, it has been found
nowhere else but here.
153
00:24:58,920 --> 00:25:00,840
Its camouflage is so effective
154
00:25:00,880 --> 00:25:04,120
that it's almost impossible to see it
on these rocks.
155
00:25:08,040 --> 00:25:14,160
And on its tail, moveable scales have been
modified to look like a spider's legs...
156
00:25:18,640 --> 00:25:20,920
...and its tip like an abdomen.
157
00:25:34,720 --> 00:25:40,080
Migrating birds only appear in this barren
desert during a few weeks of the year.
158
00:25:43,640 --> 00:25:47,480
This is the snake's only chance to eat
for months.
159
00:25:59,680 --> 00:26:01,040
A shrike.
160
00:26:02,720 --> 00:26:07,040
It has flown here from Africa
and hasn't fed for days.
161
00:26:09,120 --> 00:26:10,720
(SQUAWKS)
162
00:27:00,040 --> 00:27:02,040
Better luck next time.
163
00:27:11,200 --> 00:27:16,600
Conditions are almost as harsh
on the dry plains of northern India.
164
00:27:24,280 --> 00:27:28,440
A male Sarada lizard does his best
to get himself noticed.
165
00:27:29,880 --> 00:27:31,520
It's breeding time.
166
00:27:42,520 --> 00:27:47,040
The wide open spaces
are a good place to be seen.
167
00:27:57,080 --> 00:28:00,960
He's only 7cm tall,
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00:28:01,000 --> 00:28:04,160
but a rock will help to make him
conspicuous.
169
00:28:23,880 --> 00:28:27,880
And he's already been noticed
by one female.
170
00:28:32,520 --> 00:28:35,200
It's time for him to show off.
171
00:28:43,080 --> 00:28:48,960
The more healthy and virile he is,
the brighter his colours are.
172
00:28:55,520 --> 00:28:58,600
And females like bright, flashy colours.
173
00:29:05,520 --> 00:29:10,680
But he, it seems,
is not as conspicuous as he might be.
174
00:29:14,600 --> 00:29:16,880
In the neighbouring territory,
175
00:29:16,920 --> 00:29:21,000
there's another male
who's found an even bigger rock.
176
00:29:29,720 --> 00:29:34,240
So the newcomer is not making
quite such a good impression.
177
00:29:35,440 --> 00:29:38,520
The one on the big rock
is attracting all the females.
178
00:29:59,080 --> 00:30:03,720
The newcomer will need a higher platform
if he's to be seen by a female,
179
00:30:03,760 --> 00:30:06,240
and he'd better do something about it.
180
00:30:07,880 --> 00:30:10,080
He only lives for a year.
181
00:30:13,960 --> 00:30:16,960
This is his one chance.
182
00:30:21,480 --> 00:30:23,840
He will have to fight, if necessary.
183
00:30:45,120 --> 00:30:47,680
His rival isn't backing down.
184
00:31:05,680 --> 00:31:08,560
Sarada males can fight to the death.
185
00:32:10,400 --> 00:32:12,440
The newcomer has won.
186
00:32:21,720 --> 00:32:26,280
Now he can claim the high platform
and the best territory...
187
00:32:29,000 --> 00:32:32,240
...and the females will choose him
for a partner,
188
00:32:32,280 --> 00:32:35,600
as long as he can fight off
the other claimants.
189
00:32:40,840 --> 00:32:42,560
(THUNDER RUMBLES)
190
00:32:51,440 --> 00:32:54,640
As the Himalayas rose
over millions of years,
191
00:32:54,680 --> 00:32:57,840
they eventually formed a gigantic barrier
192
00:32:57,880 --> 00:33:02,560
that prevented rain clouds
from the south travelling farther north...
193
00:33:05,200 --> 00:33:09,600
...and a completely new weather system
developed in Southern Asia.
194
00:33:24,520 --> 00:33:27,320
The monsoon.
195
00:33:37,720 --> 00:33:41,800
These drenching annual rains
transformed Southern Asia.
196
00:33:43,640 --> 00:33:45,720
Dense rainforests formed,
197
00:33:45,760 --> 00:33:51,560
in which plants and animals of all kinds
were able to proliferate and evolve.
198
00:33:58,200 --> 00:34:01,960
Some of the tallest jungles grow
in Indonesia,
199
00:34:02,000 --> 00:34:07,440
the home of the largest
of all tree-living animals of any kind...
200
00:34:10,320 --> 00:34:11,520
...the orang-utan.
201
00:34:17,520 --> 00:34:21,320
There is a multitude of things
to eat here,
202
00:34:21,360 --> 00:34:23,360
but you have to know where to find them.
203
00:34:28,320 --> 00:34:34,160
Young orangs stay with their mother
for years, learning how to do that.
204
00:34:34,200 --> 00:34:37,360
This youngster has only just started.
205
00:34:52,160 --> 00:34:56,520
Termites - an important source of protein.
206
00:35:11,720 --> 00:35:15,440
But perhaps they are an acquired taste.
207
00:35:31,320 --> 00:35:35,120
He's off to search for something
he might prefer.
208
00:35:47,760 --> 00:35:50,440
It's hard to know where to look...
209
00:36:05,080 --> 00:36:07,640
...or where it's safe to clamber.
210
00:36:18,920 --> 00:36:23,960
Different levels in the forest
contain different foods,
211
00:36:24,000 --> 00:36:29,560
and some of the most delicious are
in the very highest parts of the canopy,
212
00:36:29,600 --> 00:36:31,680
50 metres above the ground.
213
00:36:42,760 --> 00:36:47,920
He's a couple of years old
and he's already getting adventurous.
214
00:36:49,960 --> 00:36:53,600
His mother could climb
right to the top in ten minutes or so
215
00:36:53,640 --> 00:36:58,040
if she wanted to, but she lingers,
to keep an eye on him.
216
00:37:03,720 --> 00:37:06,560
A fall from this height could be fatal.
217
00:37:18,040 --> 00:37:21,240
Where the gaps between the branches
are too wide for him,
218
00:37:21,280 --> 00:37:24,680
his mother lets him use her body
as a bridge.
219
00:37:40,800 --> 00:37:43,880
Only ten metres to go before the top.
220
00:37:53,280 --> 00:37:56,320
But it's hard going for small hands.
221
00:38:07,480 --> 00:38:08,880
He's had enough.
222
00:38:19,240 --> 00:38:20,880
Time for a rest...
223
00:38:23,480 --> 00:38:24,600
...with mother.
224
00:38:34,760 --> 00:38:37,120
And this is his reward...
225
00:38:38,520 --> 00:38:41,880
...ripe mangos, sweet and juicy.
226
00:38:48,320 --> 00:38:51,160
There's so much he must learn.
227
00:38:57,760 --> 00:39:01,640
He will depend entirely
on his mother until he's seven.
228
00:39:03,800 --> 00:39:08,280
It's the longest of all childhoods
except ours.
229
00:39:16,440 --> 00:39:18,240
In these dense forests,
230
00:39:18,280 --> 00:39:22,200
it's not easy for animals
to see one another at any distance,
231
00:39:22,240 --> 00:39:26,040
but songs carry well through the jungle.
232
00:39:26,080 --> 00:39:28,480
(ANIMALS CALL)
233
00:39:30,920 --> 00:39:33,200
This is the characteristic sound
234
00:39:33,240 --> 00:39:37,320
that echoes through the Sumatran forest
at every dawn.
235
00:39:38,960 --> 00:39:41,000
(RESONANT CALL)
236
00:39:44,400 --> 00:39:47,280
But what can this be?
237
00:39:47,320 --> 00:39:48,800
(CALL CONTINUES)
238
00:39:50,720 --> 00:39:54,120
Of all the sounds
in the Indonesian forests,
239
00:39:54,160 --> 00:39:58,080
this is one of the strangest to our ears.
240
00:40:00,000 --> 00:40:01,880
It can be heard nowhere else on Earth.
241
00:40:17,960 --> 00:40:19,840
(RESONANT CALL)
242
00:40:19,880 --> 00:40:22,360
And this is the singer.
243
00:40:25,520 --> 00:40:27,880
A Sumatran rhinoceros.
244
00:40:31,440 --> 00:40:37,360
She's tiny, only a fifth of the size
of her more familiar African relatives.
245
00:40:39,640 --> 00:40:42,840
Her head could rest comfortably
on your knee.
246
00:40:48,440 --> 00:40:51,560
She is the gardener of this Eden.
247
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She doesn't just live in it -
she helps to create and sustain it.
248
00:41:03,240 --> 00:41:06,960
She eats fruits and then sheds
the seeds in her droppings
249
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and so spreads the foods she prefers
through the forest.
250
00:41:11,120 --> 00:41:12,880
(CALL CONTINUES)
251
00:41:16,600 --> 00:41:23,360
In this dense tangle, she uses sound
to locate a possible mate.
252
00:41:30,440 --> 00:41:33,720
But her calls are unanswered.
253
00:41:35,560 --> 00:41:38,680
She is living behind a fence...
254
00:41:42,080 --> 00:41:44,000
...for her own protection.
255
00:41:50,520 --> 00:41:56,240
In the past, Sumatran rhinos were
widespread throughout Southern Asia.
256
00:41:59,840 --> 00:42:03,320
Today, there are fewer than 70.
257
00:42:16,400 --> 00:42:21,280
It may well be that as she approaches
the end of her natural life,
258
00:42:21,320 --> 00:42:25,280
she will have become one of the last
of her species...
259
00:42:38,360 --> 00:42:41,160
...because, in the last 40 years,
260
00:42:41,200 --> 00:42:46,160
one-third of the forests of Southeast Asia
has been destroyed
261
00:42:46,200 --> 00:42:50,640
in order to sell timber and food products
around the world.
262
00:42:56,400 --> 00:43:01,560
The forests of Borneo and Sumatra,
home to the orang-utan, rhinos
263
00:43:01,600 --> 00:43:06,520
and thousands of other species that have
evolved here over millions of years...
264
00:43:07,840 --> 00:43:12,080
...are now in real danger of being lost
for ever.
265
00:43:24,200 --> 00:43:28,760
It seems that the animals
whose home this once was
266
00:43:28,800 --> 00:43:33,160
are worth less to us
than the land they lived on.
267
00:43:35,920 --> 00:43:40,520
Viewed from space, the scale
of destruction is only too obvious.
268
00:43:40,560 --> 00:43:45,680
Asia has undergone a faster change
in the last 100 years
269
00:43:45,720 --> 00:43:48,400
than at any other time in its history.
270
00:43:51,480 --> 00:43:55,840
Its forests are being annihilated,
its cities are expanding,
271
00:43:55,880 --> 00:44:00,040
and as the human population
approaches 4.6 billion,
272
00:44:00,080 --> 00:44:04,240
the largest of all continents
is no longer able, it seems,
273
00:44:04,280 --> 00:44:07,000
to allow space for its wildlife.
274
00:44:19,960 --> 00:44:24,160
The oceans around Southern Asia
are also feeling this pressure.
275
00:44:30,960 --> 00:44:35,640
These seas feed billions of people
around the world.
276
00:44:39,680 --> 00:44:44,560
For many fishermen here, their catch
is their only source of livelihood.
277
00:44:50,560 --> 00:44:54,800
And there is one fish here
that they prize above all others.
278
00:45:05,200 --> 00:45:07,320
The whale shark.
279
00:45:13,000 --> 00:45:17,640
It swims slowly,
gently harvesting the plankton.
280
00:45:20,160 --> 00:45:22,800
It's almost 20 metres long -
281
00:45:22,840 --> 00:45:25,480
the largest fish in the world.
282
00:45:31,680 --> 00:45:33,720
They are also under threat.
283
00:45:35,840 --> 00:45:38,720
Like many shark species in Asia,
284
00:45:38,760 --> 00:45:43,280
populations have declined
by more than half in recent years.
285
00:45:59,640 --> 00:46:02,520
They are an easy and valuable catch.
286
00:46:09,320 --> 00:46:14,200
But here, there is a respect
for the seas and their inhabitants.
287
00:46:17,600 --> 00:46:22,600
Whale shark hunting has now been
banned across Indonesia's waters.
288
00:46:26,440 --> 00:46:31,240
This whale shark plays a different part
in the lives of these fishermen.
289
00:46:35,680 --> 00:46:42,240
They feed him, and the relationship
seems to bring joy to both parties,
290
00:46:42,280 --> 00:46:47,760
and with this new protection
has come something truly remarkable.
291
00:47:00,680 --> 00:47:06,480
Whale sharks from far away
are seeking out these fishermen,
292
00:47:06,520 --> 00:47:12,760
and in these safe waters, there is
a chance for their numbers to increase.
293
00:47:16,840 --> 00:47:21,320
And maybe one day
other shark species will be protected too.
294
00:47:29,480 --> 00:47:35,440
The people here have made
a simple but extraordinary choice -
295
00:47:35,480 --> 00:47:41,880
fishing in a way that is sustainable
for themselves and the animals.
296
00:47:46,960 --> 00:47:51,560
Caring for wildlife
is surely our shared responsibility.
297
00:47:54,600 --> 00:48:00,640
Across this vast continent and across
the world, it is decisions like these
298
00:48:00,680 --> 00:48:05,840
that are key to protecting
the planet's most precious diversity.
299
00:48:21,280 --> 00:48:25,320
I first went in search of orang-utan
in 1956.
300
00:48:28,440 --> 00:48:34,960
Then, there were around 175,000
living in the remote forests of Borneo.
301
00:48:41,520 --> 00:48:46,440
ARCHIVE: I found on the forest floor
the rinds and cores of durian fruit,
302
00:48:46,480 --> 00:48:49,640
which I knew was the favourite
food of orang-utan.
303
00:48:51,040 --> 00:48:53,920
Then we heard a crashing
in the branches ahead
304
00:48:53,960 --> 00:48:58,560
and high up in the trees
we saw a great furry red form.
305
00:48:59,720 --> 00:49:01,000
He seemed enormous.
306
00:49:01,040 --> 00:49:04,080
He was probably almost five feet high.
307
00:49:09,240 --> 00:49:14,560
In the 60 years since, I've returned
to Borneo on many occasions
308
00:49:14,600 --> 00:49:17,960
to film and document its wildlife.
309
00:49:20,920 --> 00:49:22,280
But during that time,
310
00:49:22,320 --> 00:49:26,520
the island's orang-utan population
has more than halved,
311
00:49:26,560 --> 00:49:28,360
leaving them endangered...
312
00:49:29,960 --> 00:49:34,240
...and finding them in their natural
habitat has become ever more difficult.
313
00:49:37,400 --> 00:49:42,520
The cause of this decline was
evident during a visit in 2012.
314
00:49:43,520 --> 00:49:47,160
When I first came
to this river in Borneo in 1956,
315
00:49:47,200 --> 00:49:51,240
the rainforest stretched unbroken
on either side of the river
316
00:49:51,280 --> 00:49:52,840
for hundreds of miles.
317
00:49:54,200 --> 00:49:56,160
Today, it's very different.
318
00:50:02,000 --> 00:50:05,280
DAVID ATTENBOROUGH:
Now only patches of forest remain,
319
00:50:05,320 --> 00:50:09,480
so to film orang-utan in the wild
the Seven Worlds crew
320
00:50:09,520 --> 00:50:14,600
joined a research team heading
for the Gunung Palung National Park.
321
00:50:17,840 --> 00:50:20,920
This 400-square-mile area is home
322
00:50:20,960 --> 00:50:25,440
to Borneo's largest remaining
wild orang-utan population.
323
00:50:30,520 --> 00:50:33,400
Here, they are protected and studied.
324
00:50:38,040 --> 00:50:42,000
The crew follow a mother,
known to researchers as Bibi,
325
00:50:42,040 --> 00:50:47,280
and her infant Bayas
as she teaches him how to find food.
326
00:50:53,320 --> 00:50:58,480
Like all orang-utan mothers,
Bibi has to work hard to raise Bayas,
327
00:50:58,520 --> 00:51:03,880
and this means she may only have
four or five infants in her lifetime.
328
00:51:05,360 --> 00:51:07,360
This low number of babies
329
00:51:07,400 --> 00:51:12,000
means it's hard for orang-utan
to recover from population decline.
330
00:51:18,640 --> 00:51:24,840
Researchers want to know why
orang-utan give birth so rarely.
331
00:51:27,280 --> 00:51:32,920
Today, they're following a young female,
Walimah, to find out if she's pregnant...
332
00:51:34,520 --> 00:51:39,040
...but to do this, they'll have
to put themselves in the firing line.
333
00:51:44,200 --> 00:51:46,520
So what we do is we...
we have to wait till she pees,
334
00:51:46,560 --> 00:51:49,600
and we have a bag on a fishing pole,
335
00:51:49,640 --> 00:51:53,920
and when she starts to go,
we run over there and try to catch it.
336
00:51:58,280 --> 00:52:01,400
Yeah, a few years ago
I was featured in a magazine
337
00:52:01,440 --> 00:52:03,920
as the top ten worst jobs in science -
it was kind of a joke -
338
00:52:03,960 --> 00:52:06,680
but, you know,
orang-utan pee-collector was number one.
339
00:52:07,960 --> 00:52:11,680
So, not too...not, er...
not too glamorous, apparently.
340
00:52:11,720 --> 00:52:15,760
Research is starting to show
an important pattern.
341
00:52:15,800 --> 00:52:17,880
The orang-utan can only conceive
342
00:52:17,920 --> 00:52:20,440
when there's enough fruit
around in their home.
343
00:52:20,480 --> 00:52:25,640
The team will now test the sample
to discover if Walimah is pregnant.
344
00:52:30,280 --> 00:52:34,800
But the orang-utan
within Gunung Palung are the lucky ones.
345
00:52:37,160 --> 00:52:41,600
Those beyond the borders of the park
face a very different world.
346
00:52:45,960 --> 00:52:49,160
Many are left with no home at all.
347
00:52:52,880 --> 00:52:57,400
This footage shows members
of International Animal Rescue
348
00:52:57,440 --> 00:53:04,080
attempting to dart and sedate a stranded
orang-utan so it can be moved to safety.
349
00:53:14,200 --> 00:53:17,760
Rescued orang-utan are treated,
350
00:53:17,800 --> 00:53:22,160
but with each passing year, there are
fewer places left for them to go.
351
00:53:33,080 --> 00:53:37,480
Since 1960,
the destruction of Borneo's rainforests
352
00:53:37,520 --> 00:53:40,560
has been happening on an industrial scale.
353
00:53:49,120 --> 00:53:52,600
Huge areas were
initially stripped for timber,
354
00:53:52,640 --> 00:53:55,680
and then a very different type of tree
was planted.
355
00:53:58,240 --> 00:53:59,360
Oil palm.
356
00:54:01,160 --> 00:54:06,960
Today, it has become the most widely used
type of vegetable oil in the world,
357
00:54:07,000 --> 00:54:12,560
and Borneo is the location of almost half
the oil palm plantations on the planet.
358
00:54:15,240 --> 00:54:19,320
These uniform plantations can't support
life in the same way
359
00:54:19,360 --> 00:54:22,040
as a rich and diverse rainforest.
360
00:54:31,080 --> 00:54:36,800
But oil palm is very important to the
local economy and it's highly efficient.
361
00:54:38,360 --> 00:54:42,240
Simply using another type of oil
might take up more land,
362
00:54:42,280 --> 00:54:45,080
leading to more deforestation.
363
00:54:49,160 --> 00:54:51,200
And this is where it ends up.
364
00:54:52,320 --> 00:54:58,000
Palm oil is found in around half the
packaged products in our supermarkets,
365
00:54:58,040 --> 00:54:59,840
as well as in biofuels.
366
00:55:02,560 --> 00:55:06,640
The balance between our needs
and conservation is hard,
367
00:55:06,680 --> 00:55:10,960
but we can offer a vital lifeline
for our forest relatives.
368
00:55:12,200 --> 00:55:15,280
We may be able to protect them
through simple choices...
369
00:55:16,640 --> 00:55:21,960
...like buying products made with
deforestation-free sustainable palm oil
370
00:55:22,000 --> 00:55:25,760
from companies that support local people
371
00:55:25,800 --> 00:55:30,920
using existing plantations
without cutting down more rainforest...
372
00:55:34,080 --> 00:55:38,480
...keeping Gunung Palung's inhabitants
safe, including Walimah.
373
00:55:39,800 --> 00:55:43,760
She did become pregnant
and now has a daughter to care for.
374
00:55:49,880 --> 00:55:55,200
Their future will be determined
by the choices we make today.
375
00:56:04,040 --> 00:56:09,600
Back in 1956, I never imagined that
within the space of my lifetime
376
00:56:09,640 --> 00:56:14,280
these intelligent apes
and the ancient forests they have lived in
377
00:56:14,320 --> 00:56:18,120
for millions of years
would be placed under such dire threat.
378
00:56:27,040 --> 00:56:33,280
Just how much longer they will inhabit
the planet is up to all of us.
379
00:56:42,200 --> 00:56:47,560
Next time...a land of the unexpected.
380
00:56:56,160 --> 00:56:59,760
The richest and most diverse
continent on Earth...
381
00:57:02,160 --> 00:57:04,000
...South America.
31445
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