deep-sea

adjective

ˈdēp-ˈsē 

: of, relating to, or occurring in the deeper parts of the sea

deep-sea fishing

Synonyms of deep-sea

• oceanic

Examples of deep-sea in a Sentence

chartered a boat to do some deep-sea fishing

Recent Examples on the Web

The paper eliminates a popular theory as to why insects can’t live in oceans—namely that their respiratory systems would implode under deep-sea pressure. — Mary Randolph, Scientific American, 23 July 2026

Scientists have found an active coral community that may belong to a deep-sea coral reef system presumed to be dead decades ago, according to new research. — Julia Jacobo, ABC News, 23 July 2026

The government of American Samoa, which has banned deep-sea mining in local waters, did not immediately return a message seeking comment. — Dánica Coto, Chicago Tribune, 17 July 2026

But this place is all about fun on the water, and the Taj can arrange kayaking through the mangroves at night to see the bioluminescence, scuba diving, deep-sea fishing, and forays to see turtles nesting. — Condé Nast, Condé Nast Traveler, 15 July 2026

Word History

First Known Use

circa 1625, in the meaning defined above

Rhymes for deep-sea

• agree
• allee
• banshee
• beastly
• bibi
• bowsprit
• carefree
• cerci
• chablis
• cowpea
• crappie
• crappy

Kids Definition

deep-sea

adjective

ˌdēp-ˌsē

: of, relating to, or occurring in the deeper parts of the sea

deep-sea fishing