Few places on Earth have enough food to support so many big cats. 很少地方有足够的食物能养活这么多只大猫
A big male like this one can dive to 30 metres 这种体型的雄性海鬣蜥可潜到水下三十米
Adults can only raise young here in years when the seasonal vole crop is big enough to support them. 成鸟能在这里养育小宝宝 表示今年的田鼠够多可以养活它们
It's so big and powerful, it can even bring down an adult caribou. 它大而强壮,甚至可以干掉一头成年北美驯鹿
but in Southern Africa they're so big they create seas rich enough to support colonies of over a million seals. 不过在南部非洲的大洋流带来的 充足食物能满足百万只海豹的需要
The big fish scare the prey into cracks 大鱼将猎物吓到裂缝里
yet the great barrier reef is so big it can be seen from the Moon. 可是它们生成的大堡礁甚至可以在月球上看到