Relating to or found in the abyssal zone of the ocean combined with the benthic (sea floor) environment; extremely deep-sea.
Compound of 'abysso-' (from Greek 'abyssos,' without bottom) and 'benthonic' (from Greek 'benthos,' depth or sea floor), joined together to describe the deepest ocean environments.
Abyssobenthonic creatures live in complete darkness under crushing pressure—some fish don't even have eyes, and others create their own light with bioluminescence to find dinner in the pitch-black deep!
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