The motion from ocean currents causes storms, somewhat similar to the atmospheric ones we experience on the planet’s surface.
The currents that run along the shore can move at about 1 mile (1.6 kilometers) per hour. This has the same effect as 45-mile (72-kilometer)-per-hour winds along the coast, stirring up sediment and re-creating the ocean floor.
Just as air currents cause storms on the ocean surface midway between the equator and the poles, similar eddies, or whirlpools, occur underwater. The result of these storms, which can last for weeks, is a redistribution of sediment from the ocean floor.
Abyssal storms have created drifts of sediment on the ocean floor 1 mile (1.6 kilometers) thick, 600 miles (960 kilometers) long, and 100 miles (160 kilometers) wide.