Synonyms of deep-seanext
: 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.
As a science journalist and ocean explorer, she's investigated misinformation campaigns on social media, embedded in Alaskan archaeological digs, and contributed to the discovery of deep-sea organisms in the Central Pacific. Madison Dapcevich, Outside, 16 Mar. 2026 With growing interest globally in deep-sea mining, the International Seabed Authority (ISA) is developing rules for how countries lease and commercially mine international waters. Lauren Sommer, NPR, 13 Mar. 2026 Tommy Thompson, a deep-sea explorer who spent more than a decade in federal custody for refusing to disclose the location of a cache of gold coins from a historic shipwreck, was released from prison. Sarah Rumpf-Whitten, FOXNews.com, 12 Mar. 2026 Biodiversity Boom in the Nankai Trough The second major study from the expedition focused on the Nankai Trough, one of Japan’s most geologically active deep-sea regions. Ryan Brennan, Miami Herald, 11 Mar. 2026 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

Browse Nearby Words

Cite this Entry

“Deep-sea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deep-sea. Accessed 22 Mar. 2026.

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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