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Ocean life

Ocean life A-Z

Abyssal plain   A flat region of ocean floor lying between 2000 and 6000 metres (6500–20,000 feet) deep. It is covered by a thick layer of mud called ooze. The animals that live here must lift themselves out of the ooze, burrow inside it, or find a way of slithering across it. 

Abyssal zone   The layer of water that extends from 4000 metres (13,000 feet) down to the ocean floor. Only a few animals live in this zone.  

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