A seamount is a
mountain rising from the
ocean seafloor that does not reach to the water's surface (
sea level), and thus is not an
island. These are typically formed from extinct volcanoes, that rise abruptly and are usually found rising from a seafloor of 1,000 - 4,000 meters depth. They are defined by
oceanographers as independent features that rise to at least 1,000 meters above the seafloor. The peaks are often found hundreds to thousands of meters below the surface, and are therefore considered to be within the
deep sea. An estimated 30,000 seamounts occur across the globe, with only a few having been studied. However, some seamounts are also unusual. For example, while the summits of seamounts are normally hundreds of meters below sea level, the
Bowie Seamount rises from a depth of about 3,000 meters to within 24 meters of the sea surface.
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A conical underwater mountain formed by a volcano and rising 1000 meters or more from the sea floor.
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