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
In the deep sea off the Cook Islands in the South Pacific, a remote exploration vehicle is spending the month of October exploring the seafloor for EVNautilus, from the Ocean Exploration Trust.
—Irene Wright, Miami Herald, 13 Oct. 2025
One of the most potent greenhouse gas emissions has been discovered seeping out of cracks of the Antarctic seafloor, researchers announced.
—Julia Jacobo, ABC News, 11 Oct. 2025
The most common cause is underwater earthquakes that force the seafloor to move vertically, either rising or sinking, which displaces massive volumes of water.
—Shane Croucher, MSNBC Newsweek, 10 Oct. 2025
Since 1999 Goldfinger and his team have been drilling into the seafloor at this tectonic crossroads, known as the Mendocino Triple Junction, to pull up cores that show a cross section of the sediments that have built up there.
—Jack Tamisiea, Scientific American, 10 Oct. 2025
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Irene Wright, Miami Herald, 13 Oct. 2025
One of the most potent greenhouse gas emissions has been discovered seeping out of cracks of the Antarctic seafloor, researchers announced.
—Julia Jacobo, ABC News, 11 Oct. 2025
The most common cause is underwater earthquakes that force the seafloor to move vertically, either rising or sinking, which displaces massive volumes of water.
—Shane Croucher, MSNBC Newsweek, 10 Oct. 2025
Since 1999 Goldfinger and his team have been drilling into the seafloor at this tectonic crossroads, known as the Mendocino Triple Junction, to pull up cores that show a cross section of the sediments that have built up there.
—Jack Tamisiea, Scientific American, 10 Oct. 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 21 Oct. 2025.
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