Adult green turtles (Chelonia mydas) grow to 1.5m (5 ft) long. The average weight of mature individuals is 68–190 kg (150–419 lb) and the average carapace length is 78–112 cm (31–44 in).
Green turtles migrate long distances between feeding sites and nesting sites; some swim more than 2,600 km (1,600 mi) to reach their spawning grounds.
Mature turtles often return to the exact beach from which they hatched. Females usually mate every two to four years. Males, on the other hand, visit the breeding areas every year, attempting to mate.
All populations are considered threatened!
Human action presents both intentional and unintentional threats to the green turtles survival. Intentional threats include continued hunting, poaching and egg harvesting. More dangerous are unintentional threats, including boat strikes, fishermen’s nets that lack turtle excluder devices, pollution and habitat destruction.
Chemical pollution may create tumors; effluent from harbors near nesting sites may create disturbances; and light pollution may disorient hatchlings.