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The Seamounts Portal

Denson Seamount
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.

About this project

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WikiProject Seamounts

We are a small (tiny!) WikiProject dedicated to improving Wikipedia's coverage of Seamount sand other underwater volcanic anomities- and we need your help! There are lots of articles in our criterea in need of expansion or creation. You can help by joining! You can also help us sort out all of the Seamount pics on Commons here and here. We work on:

  • All articles about seamounts, mid-ocean ridges, and other oceanic mountain structures.
  • Also articles about many types of seamounts (guyots, submarine volcanoes, submerged continental fragments) are within the scope.
  • Articles about some oceanic species are included within the project's scope because of their association with seamounts.
  • Articles about some marine protected areas which have been set aside primarily because of their seamounts.
  • Articles about people, places, or other entities notable for their association with a seamount.

Please feel free to join the project and expand its scope in any necessary directions.

Selected seamount


Ferdinandea is a Mediterranean seamount, currently 6 meters (20ft) under the sea, that was the subject of a 4-way dispute in 1831. First denotated in 10 BCE, an eruption in 1831 brought it to the surface. Lying between Sicily and Tunisia, it has erupted into the surface 4 or 5 times before sinking back into the sea. In 1831, a large eruption brought it to the surface and almost started a war over its sovereignty. The United Kingdom landed and gave it the name Graham Island. The King of the Two Sicilies, Ferdinand II, after whom the island was named Ferdinandea, sent ships to the nascent island to claim it for the Bourbon crown. The French Navy also made a landing, and called the island Julia. Spain also declared its territorial ambitions. The war was only reverted when the island sank back down the following year, 1832....More

To do

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Assess articles in scope of the project.

  • Add seamount categories to articles.
  • Add {{Infobox Seamount}}, {{WikiProject Seamounts}}, and other seamount-related fields to pages within our scope.
  • Expand seamount articles which are stubs, esp. by adding photos and references.


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