Bottom-dwelling creatures like mussels, brittle stars and sea urchins have not developed any defenses.

类似贻贝、海蛇尾和海胆这样生活在海底的生物尚未演化出任何防御能力。

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When dolphins are feeding, that target is often a bottom-dwelling fish, though they also eat shrimp and squid.

宽吻海豚摄取食物时，其目标往往是在海底栖息的鱼类，但它们也吃虾和鱿鱼。

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The answer, researchers hypothesize and report online today in PLoS ONE, is that the bottom-dwelling fish are a lot more nutritious.

在《公共图书馆综合期刊》（PLOS ONE）上，研究人员假设并发表了结论：底栖海洋鱼更有营养。

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Right now, MLB tries to level the playing field by forcing competitive, rich teams to give a small part of their revenue to bottom-dwelling, poor teams.

FORBES: Play More Ball!

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?

Since cesium binds to the sediment on the ocean floor, the radiation has likely had the biggest effect on bottom-dwelling fish and other animals though the consequences still aren't clear, said Tatsuo Aono, a specialist at Japan's National Institute of Radiological Sciences.

WSJ: In Japan, Relief at Radiation's Low Toll