Pedro Bank is a large bank of sand and coral, partially covered with seagrass, about 80 km south and southwest of Jamaica, rising steeply from a seabed of 800 meters depth. It slopes gently from the Pedro Cays to the west and north with depths from 13 to 30 meters (43–98 feet). The total area of the bank within the 100-metre (328-foot) isobath measures 8,040 square kilometers (3,104 square miles). The area of a depth to 40 meters (130 feet) is triangular, 70 kilometers (43 miles) long east-west, and 43 kilometers (27 miles) wide. 2,400 square kilometers (927 square miles) are less than 20 meters (66 feet) deep. With its islets, cays and rocks, a total land area of 270,000 m2 (2,906,256 sq ft), it is the location of one of the two offshore island groups of Jamaica, the other one being the Morant Cays (Jamaica also has nearshore islands like the Port Royal Cays).