Any of several snakes, of the subfamily Hydrophiinae, that live in the waters of the Pacific and Indian Oceans. / Any snake that lives in the sea. / A sea serpent.

The elephant seal

Synonym of fish fork

plural of seafood fork

(oceanography) A mostly enclosed sea that has limited exchange of deep water with outer oceans, and where the water circulation is dominated by salinity and temperature differences rather than winds.

A tropical sea in the Western Hemisphere, part of the Atlantic Ocean, southeast of the Gulf of Mexico.

(obsolete) A star used for navigation or guidance at sea.

Alternative spelling of seamark

The southern part of the Gulf of Bothnia.

An arm of the North Atlantic Ocean between Greenland and Labrador.