pelagic

1 of or relating to the sea among pelagic animals the undisputed king is the blue whale, the largest creature currently roaming the face of the earth Synonyms maritime, oceanic, marineRelated Words abyssal, deep-sea, deepwater, saltwater; benthic; admiralty, nautical, naval; undersea, underwater; hydrographic, oceanographic (also oceanographical)

2 of, relating to, or occurring in the open sea at one time pelagic whaling was the cornerstone of the island's economy Synonyms blue-water, oceanic, deep-seaRelated Words deepwater; marine, maritime, nauticalNear Antonyms littoral