• WordNet 3.6
    • n benthos organisms (plants and animals) that live at or near the bottom of a sea
    • n benthos a region including the bottom of the sea and the littoral zones
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Webster's Revised Unabridged Dictionary
    • n Benthos bĕn"thŏs (Bot. & Zoöl) The bottom of the sea, esp. of the deep oceans;
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Century Dictionary and Cyclopedia
    • n benthos The plants and animals that live in the sea-bottom, and those that are attached to its surface, and those that creep or run over it: a collective noun introduced by Haeckel. The benthos is contrasted with the plankton, or floating and swimming fauna and flora of the sea. It includes all the marine macrophytic algæ, also some phanerogams, the sea-grasses (see sea-grass, 1), as well as an abundance of microphytic algæ (diatoms, etc.). It is divided into the sedentary and the vagile or vagrant benthos, the former including organisms attached to the bottom, the latter those moving over it. See plankton, nekton.
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. be`nqos depth of the sea


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His research is used by policy makers to assist in the management of marine environment, such as fisheries, aquaculture, marine protected areas, reefs, seamounts and deep-sea benthos.