The surface of the Caribbean plate is divided into five basins: Grenada (depth 4120 m), Venezuelan (5420 m or 5630 m), Columbia (4532 m or 4263 m), Cayman (Bartlett, 7686 m) and Yucatan (5055 m or 4352 m). Depressions divided submarine ridges (probably the former island arcs), Aves, and Beate Nicaraguan show.
Caste Basin is separated from the Gulf of Mexico, Yucatan Channel, which is located between the Yucatan Peninsula and the island of Cuba and has a depth of about 1600 meters south of the Yucatán Basin from east to west stretched Kaymanov hollow, partially separated from the Yucatán Cayman Ridge, which in some places goes on surface, forming the Cayman Islands. The Nicaraguan Rise, which has the form of a triangle and a depth of about 1200 meters, stretches from the coast of Honduras and Nicaragua to the island of Haiti. This uplift is the island of Jamaica, and on it the border between the Cayman Islands and the Columbia basins. Columbia Basin, in turn, partially separated from the Venezuelan Beata ridge, which rises to 2,121 meters below sea level. The Colombian and Venezuelan basins are connected Aruba gap, the depth of which reaches 4 thousand meters Aves ridge separates the Venezuelan small Grenada Basin, which is bounded to the east arc of the Lesser Antilles.
In the ridge of the Greater Antilles, there are two deep passes: the Strait of Anegada and Windward Passage. The depth of the Strait Anegada varies from 1950 to 2350 m, the upwind passage - from 1600 to 1630 m.