chiefly Ecology
Definition of sublittoral
adjective
living, growing, or accumulating near to or just below the shore: sublittoral algae relating to or denoting a biogeographic zone extending (in the sea) from the average line of low tide to the edge of the continental shelf or (in a large lake) beyond the littoral zone but still well lit: sheltered sublittoral regions mobile species will migrate to sublittoral waters offshore
