Crocodilians are an important part of the Everglades ecosystem and are considered a keystone species in South Florida. Crocodiles and alligators belong to a group of reptiles called crocodilians, which are the largest of the living reptiles. Of only 23 different species in the world, 2 species are native to the United States, in particular, south Florida. This is the only place where both species coexist. The American alligator (Alligator mississippiensis) ranges throughout the southeastern United States, and Everglades alligators exist at the southern end of their range. American Crocodiles (Crocodylus acutus), inhabit coastal areas of south Florida where they are at the northern end of their range.

See the results for crocodilians in the Greater Everglades or Southern Coastal Systems.

Photo credit: South Florida Water Management District.

How is it measured?

Crocodilians are measured in the Greater Everglades and the Southern Coastal Systems. In the Greater Everglades, alligators are the only species measured. In the Southern Coastal Systems, both alligators and crocodiles are measured. Alligators are in the Southwest Coast sub-region, and crocodiles are in the Biscayne Bay and Florida Bay sub-regions. The indicator scores are calculated based on the performance measures in the Stoplight Report.