Desecheo Island

Desecheo is a small uninhabited island of the archipelago of Puerto Rico located in the northeast of the Mona Passage; 13 mi from Rincón on the west coast of the main island of Puerto Rico and 31 mi northeast of Mona Island. It has a land area of 0.589 sq mi . Politically, the island is administered by the U.S. Department of the Interior, U.S. Fish and Wildlife Service.

Desecheo, which has no known bodies of surface water, reaches a maximum elevation of 715 ft and has an annual precipitation, on average, of 40.15 in . The lack of surface water limits its flora to thorny shrubs, small trees, weeds and various cacti, including the endangered higo chumbo . Fauna includes various species of seabirds, three endemic species of lizard , introduced goats and rats, and a population of rhesus monkeys introduced from Cayo Santiago in 1967 as part of a study on adaptation. Before the introduction of rhesus monkeys the island was the largest nesting colony of the brown booby, however, no species presently nests on the island.

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