Términos

Rivers located beneath the earth's surface, such as those found in caves.

Gradual slopes, typically with a smooth surface, such as those found around island groups and seamounts.

Underwater elevations, typically located on a shelf, covered by relatively shallow water, but sufficient for safe surface navigation.

Depressions on the sea floor.

Small terraces below the surface of the ocean.

Narrow, steep-sided depressions located on the ocean floor.

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.