纪录片《南太平洋》 第75期 无尽深蓝（09）（在线收听）

This young slipper lobster may be using this jelly as a buoyancy aid.

这只幼蝉虾也许在利用水母保持浮力

Some of these ocean vagrants may offer protection,

一些海洋流浪者会给他人提供保护

like this pyrosome is doing for the shrimp.

群火体虫正在保护小虾

In the world's deepest ocean, averaging over two-and-a-half miles deep,

这里是世界上最深的海洋，平均深度超过四公里

new species are constantly being discovered.

新物种不断被发现

Like this seahorse, never filmed before.

比如这种海马，从未出现在镜头前

At dawn, these little-known creatures retreat into the safety of the abyss.

黎明时分，这些鲜为人知的生物便会撤回安全的深海中

But there are some predators that can follow them down.

但有些捕食者能够随它们下潜

Short-finned pilot whales are accomplished deep-sea divers.

短肢领航鲸非常擅长深海潜水

Leaving the barren upper layers behind, they can swim over half a mile down

从贫瘠的上层水域出发，它们可以向深处下潜近一公里

and use their sonar to track the huge shoals of squid.

利用声呐追踪成群的乌贼

But they too are being tracked.

但螳螂捕蝉，黄雀在后