bentho-, benth-

(Greek: deep, depth; the fauna and flora of the bottom of the sea; sea bottom; depth [by extension, this element includes lake, river, and stream bottoms])

abyssal-benthic (adjective) (not comparable)
In oceanography, of or relating to the deepest regions of the sea and the organisms inhabiting that environment: There was an article in Jim's newspaper reporting that a ship recently sank in the abyssal-benthic area of the Pacific Ocean near California and was completely inaccessible or unreachable.
abyssobenthic, abyssobenthonic (adjective); more abyssobenthic, more abyssobenthonic; most abyssobenthic, most abyssobenthonic
1. Pertaining to, or found on, the bottom of the ocean at depths exceeding about 1,000 meters (3280.839 feet): Willard had to use specialized equipment to explore the abyssobenthic areas of the ocean.
2. Living on or in the ocean floor in the great depths of the oceans or lakes into which light does not penetrate; commonly used in oceanography of depths between 4,000 and 6,000 meters (13,123 and 19,685 feet): The fish that was discovered recently was an example of an abyssobenthonic creature.
archibenthal zone, archibenthic zone
1. The continental slope; the sea floor from the edge of the continental shelf to the continental rise.
2. The ocean layers between 200 feet and 3300 feet (65 and 1050 meters); the upper part of the abyssal zone.
archibenthic
Referring to the bottom of the sea from the edge of the continental shelf to the upper limit of the abyssobenthic zone, at depths of ca. 200 to 1 000 meters.
archibenthos, archibenthal, archibental
Belonging to or inhabiting the depths of the primitive (paleozoic) ocean.
benthal
1. Of or pertaining to ocean-depths exceeding 1 000 fathoms or happening on the bottom under a body of water.
2. Relating to the deepest zone or region of the ocean.
benthic, benthonic
1. Pertaining to the sea bed, river bed, or lake floor.
2. The collection of organisms living on or in sea or lake bottoms.

A reference to benthos; from Greek, meaning "depth"; which designates the oceanic substratum.

Benthic refers to the fauna living on the bottom, in contrast to the pelagic fauna, which live in the open oceans.

benthogenic
Derived from or produced from the benthos.
benthon
The aggregate of organisms that live on or in the benthos [benth(os) + -on, extracted from plankton; according to Random House Unabridged Dictionary, 2nd ed., 1987].
benthopelagic
Spanning the deepest to the highest levels, or areas, of oceans, seas, lakes, etc.
benthopheustophyte
Any large plant resting freely on the floor of a lake but capable of drifting slowly with the currents.
benthophilia
Thriving in the lowest areas of oceans, seas, lakes, etc.
benthophyte
A plant living at the bottom of a body of water or in the bed of a river.
benthopleustophyte
Any large plant resting freely on the floor of a lake but capable of drifting slowly with the currents.
benthopotamous
Living on the bed (bottom) of a river or stream.

Inter-related cross references, directly or indirectly, involving the "sea" and the "ocean" bodies of water: abysso- (bottomless); Atlantic; batho-, bathy- (depth); halio-, halo- (salt or "the sea"); mare, mari- (sea); necto-, nekto- (swimming); oceano-; pelago- (sea, ocean); plankto- (drifting); thalasso- (sea, ocean).