Guyots also known as seamount or table mount is a term in geology used for an isolated undersea mountain. Erosion caused by waves destroys the top of the seamount causing it to appear flat in shape. The flat top can have a diameter greater than 10km (6 miles).
It is usually about 200 meters (600 feet) below sealevel. Due to the movement of the ocean floor away from the oceanic ridges, the seafloor sinks and this causes the flattened guyots to be submerged to become undersea flat topped peaks.
Guyots have been found mostly in Pacific Ocean but they are present in all the oceans except the Arctic Ocean.