n. 25B6; noun
the sea sparkled in the sun : (THE) OCEAN, the waves; informal the drink; Brit. informal the briny; poetic/literary the deep, the main, the foam. See list.
the boat overturned in the heavy seas : WAVES, swell, breakers, rollers, combers; informal boomers.
a sea of roofs and turrets : EXPANSE, stretch, area, tract, sweep, blanket, sheet, carpet, mass; multitude, host, profusion, abundance, plethora.
marine, maritime, nautical.
land.
25B6; adjective sea creatures : MARINE, ocean, oceanic; saltwater, seawater; ocean-going, seagoing, seafaring; maritime, naval, nautical; technical pelagic, thalassic.
25A0; at sea CONFUSED, perplexed, puzzled, baffled, mystified, bemused, bewildered, nonplussed, disconcerted, disoriented, dumbfounded, at a loss, at sixes and sevens; informal flummoxed, bamboozled, fazed; N. Amer. informal discombobulated; archaic wildered, mazed.
Seas and Oceans
Adriatic Sea Inland Sea
Aegean Sea Ionian Sea
Andaman Sea Irish Sea
Antarctic Ocean Japan, Sea of
Arabian Sea Java Sea
Arafura Sea Kara Sea
Aral Sea Laptev Sea
Arctic Ocean Ligurian Sea
Atlantic Ocean Marmara, Sea of
Azov, Sea of Mediterranean Sea
Baltic Sea North Sea
Banda Sea Okhotsk, Sea of
Barents Sea Pacific Ocean
Beaufort Sea Red Sea
Bellingshausen Sea Ross Sea
Bering Sea Sargasso Sea
Black Sea Savu Sea
Caribbean Sea Scotia Sea
Caspian Sea South China Sea
China Sea Southern Ocean
Chukchi Sea Sulu Sea
Coral Sea Tasman Sea
Dead Sea Timor Sea
East China Sea Tyrrhenian Sea
Flores Sea Weddell Sea
Galilee, Sea of White Sea
Greenland Sea Yellow Sea
Indian Ocean