variants
or less commonly sea floor
plural seafloors also sea floors
: the floor of a sea or ocean : seabed
The Earth's crust, in this view, is divided into several immense plates that make up the continents and seafloors, and that all float on a hot, plastic, subterranean "mantle."—
Walter Sullivan
Walter SullivanExamples of seafloor in a Sentence
Recent Examples on the Web
Before the expedition, only 14 animal species were known to inhabit the area’s cold seeps — places on the ocean floor where gases and fluids leak from below the seafloor.
—Ryan Brennan, Miami Herald, 11 Mar. 2026
Once debris reaches the seafloor, its fate varies by material.
—Ryan Brennan, Kansas City Star, 10 Mar. 2026
One of the nation’s most famous wartime shipwrecks is apparently still defending itself on the seafloor off Cape Hatteras, North Carolina, researchers say.
—Mark Price, Charlotte Observer, 10 Mar. 2026
Even after 26 years, tracks left by mining vehicles were still visible on the seafloor.
—Leonardo MacElloni, The Conversation, 10 Mar. 2026
See All Example Sentences for seafloor
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Ryan Brennan, Miami Herald, 11 Mar. 2026
Once debris reaches the seafloor, its fate varies by material.
—Ryan Brennan, Kansas City Star, 10 Mar. 2026
One of the nation’s most famous wartime shipwrecks is apparently still defending itself on the seafloor off Cape Hatteras, North Carolina, researchers say.
—Mark Price, Charlotte Observer, 10 Mar. 2026
Even after 26 years, tracks left by mining vehicles were still visible on the seafloor.
—Leonardo MacElloni, The Conversation, 10 Mar. 2026
See All Example Sentences for seafloor
Cite this Entry
“Seafloor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seafloor. Accessed 13 Mar. 2026.
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