- a struggle to conserve precious energy in the open ocean.
在这广袤的大洋中只为获得宝贵的能量 - The biggest of all fish
这是最大的鱼类 - thirty tons in weight, twelve meters long
30吨重,12米长 - a whale shark.
鲸鲨 - It's huge bulk is sustained by mere microscopic creatures of the sea
它的巨大身躯上是靠吃一种很小的海洋生物长成的 - Plankton.
浮游生物 - Whale sharks cruise on regular habitual routes between the best feeding grounds.
鲸鲨经常在它的最好的进食地点之间洄游