The organisms and life forms that live in the deepest parts of the ocean floor, especially at extreme depths.
From archi- (extreme, original) + benthos (sea bottom organisms). Benthos comes directly from Greek benthos (depth of the sea), referring to organisms living on the ocean floor.
The archibenthos represents one of Earth's final frontiers—we've mapped more of the moon than we've explored these extreme ocean depths, and the creatures living there have adapted to crushing pressure and total darkness in ways that seem almost impossible.
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