o·ce·an·ic 
(ō′shē-ănĭk)
(ō′shē-ănĭk)adj.
1. Of or relating to the ocean.
2.
a. Relating to the open ocean, away from coastal waters: "Like many oceanic islands, Bermuda was originally free of all mammals except the bat" (Dwight Holing).
b. Relating to or inhabiting the ocean waters that lie beyond the continental shelf and exceed 200 meters (656 feet) in depth.
3. Resembling an ocean in expanse; vast: oceanic steppes.