seafloor, undersea, continental shelf, sea, subsurface, reef, arctic ocean, intertidal, seamount, ocean, waters, territorial waters, timor sea, underwater, beaufort sea, crustal plate, coral reef, coastline, arafura sea, islands, tatar strait, seawater, bathymetry, novaya zemlya, arctic archipelago, bathyscaph, moray firth, barents sea, ross ice shelf, floe, icecap, weddell sea, skagerrak, antarctic continent, shorelines, hydrographic, permafrost, sonar, foreshore, amundsen sea, bothnia, laptev sea, celebes sea, shetland islands, deepwater, great barrier reef, sargassum, submersible, zechstein, wellhead, fringing reef, echo sounder, polynya, grapnel, trepang, shipwreck, sandbanks, hydrocarbons, riser pipe, coastland, chelyuskin, benthos, archipelagos, subantarctic, seaward, dogger bank, scapa flow, offshore, vessel, sulu sea, shoal, kattegat, tuamotu archipelago, claystone, kuril islands, pentland firth, inner hebrides, coral, bellingshausen sea, bathyscaphe, spitzbergen, demersal, carboniferous, scilly islands, asthenosphere, loligo, andaman sea, chagos, dolerite, lithosphere, glacier, kerguelen, chukchi sea, subsoil, sargasso sea, evaporite, icebergs, oceanographic, trawler, tideland, oceanographers, whale, riverbed, shoreline, roadbed, bottom, basin, coastlines, roadway, seashore, beach, bed, bottoms, embankment, prairie, shingle, pavement, surficial, undisturbed, dune, fill, geothermal, biosphere, dredged, extractive, onshore, subglacial, unstratified, industrial, pollution, sediment, shale, tional, agricultural

abyssal zone, bathyal district, bathyal zone, continental slope

bathyal district, bathyal zone, buoy, continental shelf, continental slope

davy jones, davy jones's locker, ocean bottom, ocean floor, sea bottom