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
Many of the vessels were sunk in very deep water, and a reconnaissance mission would require a significant amount of time and funds, by which point the more than 80-year-old wrecks could be little more than rust stains on the seafloor.
—Asia London Palomba, Smithsonian Magazine, 2 June 2025
Valuable mineral resources such as manganese are also said to exist on the seafloor.
—Ryan Chan, MSNBC Newsweek, 28 May 2025
Photogrammetric reconstruction of the submarine USS F-1 on the seafloor west of San Diego, Calif.
—Stephen Smith, CBS News, 24 May 2025
This geological process is not uncommon: Hot spot volcanoes dot the seafloor, and some even create island chains like Hawaii and Samoa.
—Denise Chow, NBC news, 8 May 2025
See All Example Sentences for seafloor
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Asia London Palomba, Smithsonian Magazine, 2 June 2025
Valuable mineral resources such as manganese are also said to exist on the seafloor.
—Ryan Chan, MSNBC Newsweek, 28 May 2025
Photogrammetric reconstruction of the submarine USS F-1 on the seafloor west of San Diego, Calif.
—Stephen Smith, CBS News, 24 May 2025
This geological process is not uncommon: Hot spot volcanoes dot the seafloor, and some even create island chains like Hawaii and Samoa.
—Denise Chow, NBC news, 8 May 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 8 Jun. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share