Of or relating to the ocean; situated or living in or by the ocean; flowing into the ocean.

= oceanic, adj. 1a.

Of or relating to the open sea, as distinguished from the shallow water near the coast; dwelling on or near the surface of the open sea or ocean…

= pelagic, adj. (in various senses).

Zoology. Of, relating to, or inhabiting the open sea or ocean; pelagic.

= oceanic, adj. 1a.

frequenting or inhabiting the open seas.

Of, relating to, or designating this region. Cf. pelagic, adj. 1a, 1c.