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
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Algae, bacteria, and simple protozoa would have squirmed around on top of or under the ice, and other specks of life would have swarmed alongside hydrothermal vents on the seafloor.
—Laura Poppick
july 22, Literary Hub, 22 July 2025
The submarines usually remain on the seafloor for about a day before returning samples to the surface.
—James F. Holden, The Conversation, 21 July 2025
Minerals on the deep seafloor were discovered in most oceans in the 1870s during the Challenger expeditions.
—Amber X. Chen, Smithsonian Magazine, 18 July 2025
Unlike more agile or camouflaged species, torpedo rays tend to be slow-moving and often lie hidden on the seafloor.
—Melissa Cristina Márquez, Forbes.com, 17 July 2025
See All Example Sentences for seafloor
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Laura Poppick
july 22, Literary Hub, 22 July 2025
The submarines usually remain on the seafloor for about a day before returning samples to the surface.
—James F. Holden, The Conversation, 21 July 2025
Minerals on the deep seafloor were discovered in most oceans in the 1870s during the Challenger expeditions.
—Amber X. Chen, Smithsonian Magazine, 18 July 2025
Unlike more agile or camouflaged species, torpedo rays tend to be slow-moving and often lie hidden on the seafloor.
—Melissa Cristina Márquez, Forbes.com, 17 July 2025
See All Example Sentences for seafloor
Cite this Entry
“Seafloor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seafloor. Accessed 29 Jul. 2025.
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