Puerto Rico is a Caribbean island and unincorporated territory of the United States. It is located in the northeast Caribbean Sea, approximately 1,000 miles southeast of Miami, Florida.
Puerto Rico is home to three terrestrial ecoregions: Puerto Rican moist forests, Puerto Rican dry forests, and Greater Antilles mangroves.
Species endemic to the archipelago number 239 plants, 16 birds and 39 amphibians/reptiles, recognized as of 1998. Most of these are found on the main island. The most recognizable endemic species and a symbol of Puerto Rican pride is the coquí, a small frog easily identified by the sound of its call, from which it gets its name. Most coquí species live in the El Yunque National Forest, a tropical rainforest in the northeast of the island previously known as the Caribbean National Forest. El Yunque is home to more than 240 plants, 26 of which are endemic to the island. It is also home to 50 bird species, including the critically endangered Puerto Rican amazon.
Across the island in the southwest, the 15 sq mi of dry land at the Guánica Commonwealth Forest Reserve contain over 600 uncommon species of plants and animals, including 48 endangered species and 16 endemic to Puerto Rico.
Puerto Rico has three bioluminescent bays: rare bodies of water occupied by microscopic marine organisms that glow when touched. However, tourism, pollution, and hurricanes have threatened the organisms.