Marathon, US: a dolphin at the dolphin Research Centre waits to be fed fish while swimming in a pen, as he acclimates to his new surroundings after being found.

美国，马拉松：一个海豚研究中心的海豚在池子里游泳的时候等待喂食，他已经适应了这儿的新环境。

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After untying the large mesh gates on the pen, Galaz and his divers began herding fish.

在打开围栏上巨大的网格门后，Galaz和他的潜水员们开始赶鱼。

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The resulting bubbles pen in prey fish, which the whales gobble up.

由此产生的泡沫将猎物围起来，于是座头鲸便狼吞虎咽吃掉猎物。

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Farming fish close to shore often causes contamination of water and seabeds, so the company has partnered with fish producers to devise a remotely-controlled fish pen that can drift with currents in the open sea.

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The system would use satellite communications, robotics and other cutting-edge technologies to produce millions of sushi-quality fish from each pen with no adverse environmental impacts.

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