[Free Registration/Login may be required to access all resource tools.] Discusses the differences between active and passive continental margins.

[Free Registration/Login may be required to access all resource tools.] Describes features of the seafloor and how they are mapped by echo sounding. It touches upon the continental margin as well.

A comprehensive site that provides information on the characteristics of the ocean floor, continental margin and rise, deep ocean basin, and the mid-ocean ridge. A quick quiz follows at the end of this site.

[Free Registration/Login may be required to access all resource tools.] Describes terrain features formed by ocean waves.