as in aquatic
living, lying, or occurring below the surface of the water
underwater plants don't require as much light to grow as surface plants a vessel designed for underwater exploration
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Example Sentences
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Recent Examples of underwater
Underground and underwater resources are another possibility.
—
Devika Rao, TheWeek, 5 Jan. 2026
That moment really opened my eyes to how this tactile process of image making with sunlight, chemistry and kelp could translate my experiences underwater by illustrating both the scale and the incredible details of the kelp forest.
—Michael James Rocha, San Diego Union-Tribune, 4 Jan. 2026
While this dive spot is spectacular any time of day, animals like octopi come out at night, making evening dives at the pier a truly unique underwater experience.
—Carley Rojas Avila, Travel + Leisure, 4 Jan. 2026
In the study, a hybrid autonomous underwater vehicle (HAUV) recorded a high-resolution video and bathymetric data of 21 circular formations that looked eerily similar to those observed near Japan.
—New Atlas, 3 Jan. 2026
See All Example Sentences for underwater
Devika Rao, TheWeek, 5 Jan. 2026
That moment really opened my eyes to how this tactile process of image making with sunlight, chemistry and kelp could translate my experiences underwater by illustrating both the scale and the incredible details of the kelp forest.
—Michael James Rocha, San Diego Union-Tribune, 4 Jan. 2026
While this dive spot is spectacular any time of day, animals like octopi come out at night, making evening dives at the pier a truly unique underwater experience.
—Carley Rojas Avila, Travel + Leisure, 4 Jan. 2026
In the study, a hybrid autonomous underwater vehicle (HAUV) recorded a high-resolution video and bathymetric data of 21 circular formations that looked eerily similar to those observed near Japan.
—New Atlas, 3 Jan. 2026
See All Example Sentences for underwater
Recent Examples of Synonyms for underwater
Adjective
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It was first successfully employed in an aquatic environment in 2008 to detect the presence of an invasive species — the American bullfrog — in France, after more traditional methods of DNA detection, such as audio or visual surveys, had been unsuccessful.—
Katie Hunt,
CNN Money,
7 Nov. 2025
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Visitors can still watch daily mermaid shows, which involve women donning colorful tails performing aquatic dances and stunts.—
Skye Sherman,
Travel + Leisure,
7 Nov. 2025
Adjective
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Last December, lawmakers passed a short-term funding bill that included $5.7 billion in emergency funding for the submarine industrial base.—
Lisa Hagen,
Hartford Courant,
6 Aug. 2025
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Despite the ongoing retirement of older hulls, the PLAN's submarine force is expected to grow to 65 units by 2025 and 80 units by 2035 due to an expansion of submarine construction capacity.—
Ryan Chan,
MSNBC Newsweek,
29 July 2025
Adjective
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Guests can also experience a virtual reality tour of the Titanic that takes them deep into the sea to look at the submerged vessel for a $10 add-on.—
Kansas City Star,
Kansas City Star,
8 Nov. 2025
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Fishermen in the Florida Keys found a submerged jar containing bones and other items early Friday morning, according to the Monroe County Sheriff’s Office.—
David Goodhue,
Miami Herald,
7 Nov. 2025
Cite this Entry
“Underwater.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underwater. Accessed 7 Jan. 2026.
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