Over the undersea valleys of the Colombian Pacific Ocean rises the Dorsal of Malpelo, a submarine mountain range that belongs to the Andes system. It extends about 1,400 km, from the Gulf of Guayaquil (Ecuador) to the Gulf of Urabá, in a northeast-southwest direction. This island is the cusp of this mountain range and is the only oceanic island of the Colombian Pacific; it is 2,900 meters long and 1,300 meters wide—about 3.7 km2. Eleven small islets are arranged around it. At present, the Malpelo Sanctuary of Fauna and Flora is part of the Eastern Pacific Marine Corridor (CMAR), made up of five islands: Galapagos (Ecuador), Gorgona and Malpelo (Colombia), Coiba (Panama) and Cocos (Costa Rica), which serve as a migratory route for some marine species such as hammerhead sharks (Sphyrna lewini) and sea turtles, among others.