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
The weathering of silicate rocks at the surface converts atmospheric CO2 into carbonate that ends up on the seafloor, where it can be subducted into the mantle with tectonic plates.
—Scott K. Johnson, ArsTechnica, 15 June 2026
Winds drive surface currents and much slower currents extend from the ocean’s surface down to the seafloor.
—Janet Loehrke, USA Today, 15 June 2026
The ship will also carry a 40-meter coring system for extracting deep-sea sediment samples, advanced oceanographic instrumentation, and fiber-rope lifting systems capable of operating across virtually the entire water column—from surface to seafloor.
—Dea Jusufi, Forbes.com, 13 June 2026
The zone then funnels carcasses to the seafloor, and very little sediment movement at those depths means that the carcasses stay exposed to scavengers.
—Mindy Weisberger, CNN Money, 12 June 2026
See All Example Sentences for seafloor
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Scott K. Johnson, ArsTechnica, 15 June 2026
Winds drive surface currents and much slower currents extend from the ocean’s surface down to the seafloor.
—Janet Loehrke, USA Today, 15 June 2026
The ship will also carry a 40-meter coring system for extracting deep-sea sediment samples, advanced oceanographic instrumentation, and fiber-rope lifting systems capable of operating across virtually the entire water column—from surface to seafloor.
—Dea Jusufi, Forbes.com, 13 June 2026
The zone then funnels carcasses to the seafloor, and very little sediment movement at those depths means that the carcasses stay exposed to scavengers.
—Mindy Weisberger, CNN Money, 12 June 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 16 Jun. 2026.
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