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

Examples of deep-sea in a Sentence

chartered a boat to do some deep-sea fishing
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The significant biomass and biodiversity of the ecosystems surprised the researchers, especially since deep-sea ecosystems typically rely on nutrients from the surface that slowly trickle down to the seafloor – an unlikely occurrence when the sea surface is covered by 500-foot-thick ice. Julia Jacobo, ABC News, 31 Mar. 2025 Mortimer joins those ranks with a film that functions both as awestruck spectacle and anxious warning — joining a literal boatload of marine biologists racing to demystify an ecosystem before deep-sea miners destroy it. Guy Lodge, Variety, 31 Mar. 2025 The Context Talks of the executive order come as The Metals Company (TMC) is pushing the Trump administration to open up deep-sea mining after repeatedly hitting international roadblocks. Ron Estes, MSNBC Newsweek, 31 Mar. 2025 While its striking vertical walls and massive submerged stalactites remained a major draw, divers also began documenting the varied marine life that inhabits the sinkhole, including Caribbean reef sharks, giant groupers and other deep-sea species that navigate its depths. Scott Travers, Forbes.com, 30 Mar. 2025 See All Example Sentences for deep-sea

Word History

First Known Use

circa 1625, in the meaning defined above

Time Traveler
The first known use of deep-sea was circa 1625

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Cite this Entry

“Deep-sea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deep-sea. Accessed 5 Apr. 2025.

Kids Definition

deep-sea

adjective
ˌdēp-ˌsē
: of, relating to, or occurring in the deeper parts of the sea
deep-sea fishing
Last Updated: - Updated example sentences
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