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脆弱天堂 18 - 英语听力.mp3

脆弱天堂 18 - 英语听力.mp3
脆弱天堂 18 - 英语听力
[00:00.01]Tuna are predat...
[00:00.01]Tuna are predators.
[00:02.01]They herd smaller fish to the surface, where they can be picked off one by one.
[00:06.20]They are high-speed fish - the cheetahs of the ocean.
[00:09.65]They're also the wildebeest
[00:11.55]They herd together in their thousands
[00:13.84]And undertake epic migrations across the Pacific in search of their prey.
[00:18.11]If these animals lived on land
[00:20.28]They'd be famous for providing the greatest wildlife spectacle on Earth.
[00:24.73]Instead, they're better known as a filling for a sandwich.
[00:28.69]In an ocean with no marine reserves, migratory fish have nowhere to hide.
[00:33.76]Up to two kilometres long and 200 metres deep
[00:38.23]"purse seine" nets are designed to encircle schools of tuna.
[00:42.55]A fisherman checks his nets
[00:44.57]Breathing air pumped down a tube from the vessel above.
[00:47.86]It's not only tuna that get caught in these nets.
[00:51.10]A lone turtle was in the wrong place at the wrong time.
[00:54.76]She can only hold her breath for a few minutes
[00:57.56]And the path to the surface isn't clear.
[01:00.35]She begins to panic.
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