Discover published sets by community

An underwater mountain formed by volcanic activity that does not reach the ocean's surface.

A flat or very gently sloping area of the deep ocean basin, formed by the deposition of sediments.

An area of irregular, seismically inactive topography marking the position of a once-active transform fault boundary between two lithospheric plates.

The extended perimeter of each continent, which lies submerged under relatively shallow sea and encircles a continent.

A deep, narrow depression in the ocean floor formed by the subduction of one tectonic plate beneath another.

A flat-topped seamount, typically formed from an extinct volcano that has eroded away or has been submerged and has a flat top due to erosion or flattening by marine processes.

The underwater feature found between the continental slope and the abyssal plain, formed by the accumulation of sediments from turbidity currents that settle and build up over time.

A steep-sided valley cut into the seabed of the continental slope, sometimes extending well onto the continental shelf, formed by the action of turbulent sediment laden waters.

A fissure on the seafloor from which geothermally heated water issues, typically found near volcanically active places.

A large, relatively flat submarine region that rises well above the level of the ambient seabed, generally formed by the accumulation of volcanic material.

A submarine mountain range formed by plate tectonics involving the upwelling of magma from the mantle as tectonic plates diverge.