泛滥之谜 11-英语听力

[00:00.01]Fish can now colonise areas that were recently grassland. [00:03.50]For just a few weeks they can take advantage of the huge new supplies of food. [00:08.40]Spot-necked otters are very social. [00:11.64]They live in close-knit family groups, often hunting together. [00:15.95]Intelligent and agile, they hunt using speed and cunning. [00:20.34]Webbed feet give propulsion and a long tail helps them steer. [00:25.82]Although they prefer fish [00:27.98]these otters will sometimes eat snails,frogs or even insects. [00:33.24]But there's one swamp creature that really will eat anything. [00:38.55]With a muscular body one and a half metres long and a powerful, poisonous bite [00:43.21]the Nile monitor is understandably avoided by all its neighbours. [00:48.34]Relatively clumsy on land, underwater it's transformed into an agile hunter. [00:55.02]But the huge lizard is just as happy [00:57.72]eating others' rotting leftovers on the bottom of the swamp. [01:01.03]In fact, it will eat and digest almost anything it can fit into its mouth. [01:06.73]The Nile monitor is one of the most adaptable of all the Sudd's animals. [01:11.77]In this constantly changing water world, it's a winning strategy. [01:16.22]Soon it's all change again.