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
Archaeologists first noted the remarkable collection of prehistoric structures in 2017 during a seabed mapping operation.
—Maria Mocerino, Interesting Engineering, 13 Dec. 2025
And in 2016, Beijing passed a deep-seabed law designed to develop China’s scientific and commercial capabilities and to provide a framework for engaging in international negotiations regarding ocean floorresources.
—Elizabeth Economy, Foreign Affairs, 9 Dec. 2025
Australia, Malaysia and China coordinated the largest underwater search in history, covering roughly 46,000 square miles of seabed off western Australia.
—CBS News, 3 Dec. 2025
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
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Maria Mocerino, Interesting Engineering, 13 Dec. 2025
And in 2016, Beijing passed a deep-seabed law designed to develop China’s scientific and commercial capabilities and to provide a framework for engaging in international negotiations regarding ocean floorresources.
—Elizabeth Economy, Foreign Affairs, 9 Dec. 2025
Australia, Malaysia and China coordinated the largest underwater search in history, covering roughly 46,000 square miles of seabed off western Australia.
—CBS News, 3 Dec. 2025
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
See All Example Sentences for seabed
Cite this Entry
“Seabed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seabed. Accessed 20 Dec. 2025.
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seabed
noun
sea·bed
ˈsē-ˌbed 
: the floor of a sea or ocean
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