Monito, Puerto Rico
Monito Island is a small, uninhabited island located about 4.7 km (3 miles) northwest of Mona Island and roughly 80 km (50 miles) off Puerto Rico’s western coast. Measuring only 0.147 square kilometers (0.0566 square miles) or approximately 36.25 acres, Monito is rectangular in shape and one of three islands situated in the Mona Passage. It belongs to the municipality of Mayagüez and forms part of the protected Mona and Monito Islands Nature Reserve.
The name Monito is the diminutive form of Mona, reflecting both its smaller size and geographic proximity to its larger neighbor. While both islands share similar ecological importance, Monito is even more isolated and rugged, with steep limestone cliffs rising sharply from the sea, making access extremely difficult.
TBecause of its inaccessibility and undisturbed environment, Monito has become a sanctuary for unique plant and animal species, many of which are endemic to the region. Like Mona Island, Monito is designated as an ecological reserve by the Puerto Rican government, which means it is strictly protected and uninhabited, with access limited primarily to researchers and conservationists.
In the years following World War II, Monito was used by the United States Air Force as a target for aerial bombing practice. This military history has left visible remnants, including bomb fragments and large impact craters scattered across the island’s rocky surface.
Today, Monito Island remains one of the most pristine and biologically significant locations in Puerto Rico’s territorial waters—a quiet, rarely seen outpost that offers a glimpse into both the island’s natural richness and its complex historical layers.
