Definition of deep-seanext
as in oceanic
of, relating to, or occurring in the open sea chartered a boat to do some deep-sea fishing

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Recent Examples of deep-sea Researchers also detected sleeper sharks and deep-sea coral, Nester said in a video published on the university's YouTube. Julia Gomez, USA Today, 7 May 2026 In the house reef, there’s snorkelling and paddleboarding; guests preferring deep-sea action can request private yacht excursions or big-game fishing sessions. Condé Nast, Condé Nast Traveler, 28 Apr. 2026 Earlier this week, the National Oceanic and Atmospheric Administration (NOAA) revealed that the deep-sea find belonged to a giant deep-sea anemone, Relicanthus daphneae, and was part of the base that helped the underwater creature attach to rocks. Sam Gillette, PEOPLE, 24 Apr. 2026 The fleshy glob, which resembled a hatched egg, has been linked to a giant deep-sea anemone with tentacles that reach seven feet in length. Mark Price, Charlotte Observer, 22 Apr. 2026 See All Example Sentences for deep-sea
Recent Examples of Synonyms for deep-sea
oceanic
Adjective
  • Because the mineral contains titanium and potassium, and those elements are associated with the rocks in Earth’s crust, the researchers think kopylovite is produced when sediments sink into the mantle in subduction zones atop slabs of oceanic crust.
    James Dinneen, Scientific American, 14 May 2026
  • Scientists don’t know too much about the cumulative effects of a prolonged warm oceanic heat wave.
    Los Angeles Times, Los Angeles Times, 14 May 2026

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Cite this Entry

“Deep-sea.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/deep-sea. Accessed 22 May. 2026.

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