Submarine volcano

Submarine volcanoes are volcanoes which are under the surface of the world's oceans.  These volcanoes occur in a range of forms.  Many create cone-shaped seamounts or flat-topped guyots.Encyclopedia Britannica,  "Submarine volcano"; retrieved 2012-6-9. 

Volcanoes in the ocean develop from cracks or holes in the earth's undersea surface.National Oceanic and Atmospheric Administration (NOAA),  "Scientists Discover and Image Explosive Deep-Ocean Volcano," December 17, 2009; retrieved 2012-6-9.  Changes in the ocean floor are caused when magma flows or erupts from a site which is under water. 

The presence of water alters the characteristics of a volcanic eruption.

Related pages
 Seamount
 Guyot

References

Other websites

 United States Geological Survey, Submarine Volcanoes, Vents, Ridges, and Eruptions 
 Oregon State University, Submarine volcanoes 

Category:Volcanoes
Category:Seamounts