Trawlers drag weighted nets across the sea bottom, not only scooping up every living thing, but also destroying coral and other types of habitat in the process.

捕鱼者用坠网拖过海底，在一网打尽所有生物的同时，还破坏了珊瑚及海底环境。

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The 20-day expedition aimed to uncover relationships between cold-water coral and other bottom-dwelling creatures in a pristine yet "alien" environment, according to the researchers' blog.

研究者在其博客撰文表示，此次长达20天的海底探险旨在揭开生活在原始陌生海域中的冷水珊瑚和其它海底居民间的秘密关系。

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We paddle through a channel with a white sand bottom and walls of coral, spotting lobster antennae poking out from crevices.

WSJ: The Ultimate Breathtaking Dive

When all the seaweed-eating fish in an area are removed, for example, the seaweed can take over completely, reducing coral cover and thus the diversity of bottom-dwelling organisms.

ECONOMIST: What price coral?

Among the new measures proposed are the phasing out of bottom trawls, the heavy gear that scrapes material from the bottom of the sea - fish, coral and anything else in its way.

BBC: Fishing's global footprint