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Comb jellies cruise through the water.
櫛水母在水中游弋。
They too flourish in this seasonal soup
它們也在這個季節性美湯里蓬勃生長，
and for short periods, they appear in astounding numbers.
在很短的時間內，它們就能達到驚人的數量。
Krill, shrimp like creatures.
磷蝦，一種小型蝦類。
By weight they're the most abundant animals on the planet.
如果按重量計算，他們是地球上最多量的動物，一群就可達200萬噸。
A single swarm can contain two million tons of them, and that is a lot of fish food.
磷蝦也為魚提供了大量的食物。
The shallow temperate seas support the greatest concentrations of fish on our planet.
這片溫和的淺海是地球上魚類最密集的地區。
Huge shoals migrate from their overwintering grounds in the depths to feed in these rich waters.
大量魚群從海洋深處的冬歇地趕來，在這片富饒海域進食。
It's these shoals that support most of the world's sea mammals.
魚群也養育了世界上大多數海洋哺乳動物。
Sea lions have all the agility and speed needed to collect what they want, and seemingly delight in doing so.
海獅擁有捕魚所需的敏捷和速度，看起來他們也喜歡這樣做。
Dusky dolphin, often in pods two hundred strong work together to reap the harvest.
200條暗色斑紋海豚聚集在一起，緊密合作，盡情收獲。
They break up the shoals into smaller, more manageable balls, and all the hunters benefit.
它們將魚群分成許多小群，讓獵人們更加易于處理。
