Of or pertaining to plankton.
Floating in the open sea rather than living on the seafloor.
Pertaining to the benthos; living on the seafloor, as opposed to floating in the ocean.
Any organism that lives on the seafloor
of, pertaining to, or occurring at the bottom of a body of water, especially referring to the ocean depths.
of or relating to plankton
of or relating to or happening on the bottom under a body of water