variants
or less commonly sea bed
plural seabeds also sea beds
: the floor of a sea or ocean : seafloor
This atoll is the summit of an undersea volcano that rises from the seabed 10,000 feet below the surface.—
Kennedy Warne
Kennedy WarneExamples of seabed in a Sentence
Recent Examples on the Web
Jamieson said the photographed shark maintained a depth of around 1,640 feet along a seabed that sloped into deeper water.
—Hanna Wickes, Charlotte Observer, 19 Feb. 2026
The photographed shark was maintaining a depth of around 500 meters (1,640 feet) along a seabed that sloped into much deeper water.
—CNN Money, 18 Feb. 2026
The photographed shark was maintaining a depth of around 1,640 feet along a seabed because that was the warmest of several water layers stacked upon each other to the surface, Jamieson said.
—Rod McGuirk, Los Angeles Times, 18 Feb. 2026
Melbourne, Australia — An ungainly barrel of a shark cruising languidly over a barren seabed far too deep for the sun's rays to illuminate was an unexpected sight.
—CBS News, 18 Feb. 2026
See All Example Sentences for seabed
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Hanna Wickes, Charlotte Observer, 19 Feb. 2026
The photographed shark was maintaining a depth of around 500 meters (1,640 feet) along a seabed that sloped into much deeper water.
—CNN Money, 18 Feb. 2026
The photographed shark was maintaining a depth of around 1,640 feet along a seabed because that was the warmest of several water layers stacked upon each other to the surface, Jamieson said.
—Rod McGuirk, Los Angeles Times, 18 Feb. 2026
Melbourne, Australia — An ungainly barrel of a shark cruising languidly over a barren seabed far too deep for the sun's rays to illuminate was an unexpected sight.
—CBS News, 18 Feb. 2026
See All Example Sentences for seabed
Cite this Entry
“Seabed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seabed. Accessed 24 Feb. 2026.
Copy CitationKids Definition
seabed
noun
sea·bed
ˈsē-ˌbed 
: the floor of a sea or ocean
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