Términos

Currents of running water, located undersea.

Steep to perpindicular slopes on the sea floor.

Undersea mountain systems, including subordinate ranges, basins, and plateaus.

Smooth features that slope away from the lower termination of canyons, on the sea floor.

Physical features located in the oceans below sea level, whether natural or man-made.

Branches of canyons or valleys on the sea floor.

Zones of irregular topography on the sea floor, which include ridges, escarpments, or troughs.

Linear, closed, and shallow depressions on the sea floor.

Narrow breaks in ridges on the sea floor.

Hills on the sea floor with elevations, usually rising less than 500 meters.

Small depressions on the sea floor.

Hills on the sea floor, usually rising more than 500 meters and less than 1,000 meters, and with limited extent across summits.

Geomorphic features of the earth's surface that are located below the sea.

Rocky projections or outcroppings on the sea floor, usually located near shore.

Embankments found near undersea canyons, valleys, or seachannels.

Axial depressions of the mid-oceanic ridge system.

Depressions that may not be continuous, located at the base of many seamounts, islands, and other isolated undersea landforms.

Low rounded hills located on the sea floor.

Mountain ranges located beneath of the surface of the ocean.

Prominent elevations, typically pointed, located beneath the surface of the ocean.