Continental United States nesting is limited to 3OO to 1,000 nests annually on Florida's east coast from Volusia County to Dade County. Occasional nesting also occurs in Puerto Rico and in the U.S. Virgin Islands. The nesting season varies with the locality. For Florida it is roughly June through September. Clutch size varies from 75 to 2OO eggs with incubation requiring 48 to 7O days, depending on incubation temperatures.
Hatchlings generally emerge at night.
Survival to maturity is very low. Age at maturity is thought to be 2O to 5O years. The turtles are attracted to lagoons and shoals with an abundance of marine grass and algae. Open beaches with a sloping platform and minimal disturbance are required for nesting. Green turtles apparently have a strong nesting site fidelity and often make long distance migrations between feeding grounds and nesting beaches.