Scheme of a submarine eruption.
1. Water vapor cloud
4. Lava flow
5. Magma conduit
6. Magma chamber
8. Pillow lava
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.
Superheated lava was photographed by a remotely-operated underwater robot at a depth of 4,000+ feet
Volcanoes in the ocean develop from cracks or holes in the earth's undersea surface. 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.
Images for kids
Pillow lava formed by a submarine volcano
Deepest ever filmed submarine volcano, West Mata, May 2009.