Bottom of the ocean

Bottom of the ocean

. Map of the world's oceans floor as acquired by the Seasat satellite. The mid-Atlantic ridge runs down the middle of the ocean floor separating Africa from North and South America. As shown here, a succession of great ridges runs through all of the world's ocean floors, although not always in the middle. (Courtesy of William F. Haxby, Lamont-Doherty Geophysical Observatory, Columbia University.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University