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Highly Venomous Sea Snakes Hunt in Huge Group | 20 Years of Planet Earth | BBC Earth - Video học tiếng Anh
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Highly Venomous Sea Snakes Hunt in Huge Group | 20 Years of Planet Earth | BBC Earth
Highly Venomous Sea Snakes Hunt in Huge Group | 20 Years of Planet Earth | BBC Earth
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Phụ đề (41)
0:00
And anything fleeing from the crates
0:02
will swim straight into the mouths of
0:03
the waiting tree valley.
0:06
There's nowhere to hide.
0:14
And there are snakes here, too. Lots of
0:18
them.
0:24
These are banded sea crates. They lay
0:28
their eggs on land, but they hunt here
0:31
in the water.
0:37
They're too slow to catch fish in a
0:40
straight chase, so they seek prey that
0:42
is hiding in the nooks and crannies of
0:44
the coral.
0:48
Their bite is highly venomous and
0:50
paralyzes their victims.
0:57
And on this reef, the snakes do not hunt
1:00
alone.
1:07
Sholes of yellow goatfish and trival are
1:11
seeking similar prey, and they attract
1:14
the snake's attention. As one group of
1:16
hunters searches the reef, they're
1:18
joined by the other.
1:28
At least 30 snakes have now joined the
1:32
caravan.
1:38
The big fish scare the prey into cracks
1:42
and there the snakes can catch them and
1:45
anything fleeing from the crates will
1:47
swim straight into the mouths of the
1:49
waiting tree valley.
1:52
There's nowhere to hide.
1:59
As the raiders scour the reef, more and
2:03
more snakes join the hunt.
2:26
This cooperation between snakes and
2:29
fish, spectacular though it is, has only
2:32
recently been observed, for it only
2:34
happens on the most remote reefs in
2:36
Indonesia.
2:47
Perhaps such hunting alliances were once
2:49
a common sight, but today no more than
2:52
6% of Indonesia's reefs are in their
2:55
pristine state.