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[自然百科] 2014-01-09 鲨鱼湾的海豚—7

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[Homework]2014-01-09 鲨鱼湾的海豚—7

Puck needs to watch out. As she searches the seagrass, she will be unaware of any shark approaching. If a tiger shark closes them from behind, her sonar cannot detect it. Distracted, Puck could easily be attacked. Once detected, Puck can easily outswim the shark. But when her calf arrives, it won't be so easy for her to escape.-It's got very shallow here. This is the low tide, too. Dugongs, mother and calf. Oh, look at that little baby. Look at that!
More than 10,000 dugongs live in the Shark Bay. It's the largest population in the world. Grazing on the grass beds, they are the most vulnerable to shark attacks. In the shallows they have less room to maneuver.
-The calf swims on top of its mum. That way is protected from tiger sharks, which make a good meal of a dugong calf.
Much slower swimming than dolphins, thousands of dugong calves are taken by the sharks every summer.
-We've got dolphins and dugongs together here. Hey, Puck! Oh, you are wild.
Looking for clues as to when Puck might give birth, Jennet lowers a special microphone into the water.

This post was generated by put listening repetition system,  Check the original dictation thread!
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