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
But Beijing’s ambitions don’t stop there: China does not border the Arctic, but its icebreakers are exploring new trade routes through the melting ice cap, while Chinese expeditionary ships scour the Pacific seabed for mineral-rich nodules — a prize potentially worth trillions of dollars.
—Andy Browne, semafor.com, 6 Nov. 2025
These systems allow high-resolution seabed mapping, essential for precise sensor placement.
—Kapil Kajal, Interesting Engineering, 24 Oct. 2025
The alliance’s new Operation Baltic Sentry, a standing force including frigates, patrol aircraft, drones and other assets largely for protecting seabed infrastructure, is a good beginning, but not enough.
—James Stavridis, Twin Cities, 13 Oct. 2025
Some ships of China’s research fleet, including the Xiang Yang Hong class of oceanographic survey ships, are suspected to have links to the Chinese People’s Liberation Army Navy and may conduct seabed mapping or other dual-use intelligence-gathering activities with military value.
—Micah McCartney, MSNBC Newsweek, 1 Oct. 2025
See All Example Sentences for seabed
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Andy Browne, semafor.com, 6 Nov. 2025
These systems allow high-resolution seabed mapping, essential for precise sensor placement.
—Kapil Kajal, Interesting Engineering, 24 Oct. 2025
The alliance’s new Operation Baltic Sentry, a standing force including frigates, patrol aircraft, drones and other assets largely for protecting seabed infrastructure, is a good beginning, but not enough.
—James Stavridis, Twin Cities, 13 Oct. 2025
Some ships of China’s research fleet, including the Xiang Yang Hong class of oceanographic survey ships, are suspected to have links to the Chinese People’s Liberation Army Navy and may conduct seabed mapping or other dual-use intelligence-gathering activities with military value.
—Micah McCartney, MSNBC Newsweek, 1 Oct. 2025
See All Example Sentences for seabed
Cite this Entry
“Seabed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seabed. Accessed 2 Dec. 2025.
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seabed
noun
sea·bed
ˈsē-ˌbed 
: the floor of a sea or ocean
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