but these have now acquired an unexpected taste for blubber rich penguins. 不过现在.它们可以从富含鲸脂的企鹅身上 获得意想不到的美味
They only thrive in cold temperate seas for only these waters contain sufficient food necessary to fuel such a ravenous predator. 它们只呆在冰冷的海里,也只有大海才有充足的食物 供这种贪婪的掠食者享用
but they share these waters with a shark twice their size. 不过还有2倍于它的鲨鱼 在和它们一起分享这片水域
These upwellings fertilize forests of giant kelp, that thrive in the summer sunshine. 这种上升洋流给巨藻带来了大量养分 在夏日阳光照射下它们飞速生长
the temperate seas sustain these levels of life throughout the summer. 气候温和的海域维持这个生命水平贯穿整个夏季
It's these shoals that support most of the world's sea mammals. 鱼群也养育了世界上大多数海洋哺乳动物
These are colder, rougher, and more dangerous waters. 这些是更冷、更狂暴、更多危险的水域
these dolphins have taken on an ever tougher challenge. 这些海豚面临着一个巨大挑战