An underwater canyon in the continental shelf.

V-shaped VALLEYS that run across the CONTINENTAL SHELF and down the CONTINENTAL SLOPE. See Figure 8.

A V-shaped trench or valley with steep sides cut into a continental shelf or continental slope.

A relatively narrow, deep depression with steep sides, the bottom of which generally deepens continuously, developed characteristically on some continental slopes.

A steep V-shaped trench along or across a continental shelf or deep ocean floor.

An underwater canyon, carved into the continental shelf. These can be carved by turbidity currents or carved subaerially during a time when sea level was lower.

A narrow, steep canyon that dissects a continental shelf and slope.

A long, narrow, steep-walled undersea valley.

Deep, steep-sided valley in the continental shelf.

A Submarine canyon is a steep-sided valley on the sea floor of the continental slope. Many submarine canyons are found as extensions to large rivers; however there are many that have no such association. Canyons cutting the continental slopes have been found at depths greater than 2 km below sea level.