英语听力：自然百科 大堡礁：珊瑚礁到雨林—24（在线收听） |
When they leave the safety of the mangroves, they must cross that sandy desert and many hazards waiting for them in the lagoon.This is a mantis shrimp. From his neatly capped barrow, he surveys the world with the most complex visual system known to scientists. He's about the size of a man's full arm. And he's got quite rich. Even if a young fish avoids the dangers on the seabed, there are plenty more predators floating above. Patrolling in these shore waters is probably the most dangerous animal in the lagoon, the box jellyfish, whose stinging tentacles are quite capable of killing a person.
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