<P> Only human beings and the larger sharks feed on C. mydas adults . Specifically, tiger sharks (Galeocerdo cuvier) hunt adults in Hawaiian waters . Juveniles and new hatchlings have significantly more predators, including crabs, small marine mammals and shorebirds . Additionally, their eggs are vulnerable to predation by scavengers like red foxes and golden jackals . </P> <P> Green sea turtles have a variety of parasites including barnacles, leeches, protozoans, cestodes, and nematodes . Barnacles attach to the carapace, and leeches to the flippers and skin of the turtles, causing damage to the soft tissues and leading to blood loss . Protozoans, cestodes and nematodes lead to many turtle deaths because of the infections in the liver and intestinal tract they cause . The greatest disease threat to the turtle population is fibropapilloma, which produces lethal tumor growth on scales, lungs, stomach, and kidneys . Fibropapilloma is caused by a herpesvirus that is transmitted by leeches such as Ozobranchus branchiatus, a species of leech which feeds almost entirely on green sea turtles . </P> <P> Green sea turtles migrate long distances between feeding sites and nesting sites; some swim more than 2,600 kilometres (1,600 mi) to reach their spawning grounds . Beaches in Southeast Asia, India, islands in the western Pacific, and Central America are where Green sea turtles breed . 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 . Mating seasons vary between populations . For most C. mydas in the Caribbean, mating season is from June to September . The French Guiana nesting subpopulation nests from March to June . In the tropics, green turtles nest throughout the year, although some subpopulations prefer particular times of the year . In Pakistan, Indian Ocean turtles nest year - round, but prefer the months of July to December . </P> <P> Sea turtles return to the beaches on which they were born to lay their own eggs . The reason for returning to native beaches may be that it guarantees the turtles an environment that has the necessary components for their nesting to be successful . These include a sandy beach, easy access for the hatchlings to get to the ocean, the right incubation temperatures, and low probability of predators that may feed on their eggs . Over time these turtles have evolved these tendencies to return to an area that has provided reproductive success for many generations . Their ability to return to their birthplace is known as natal homing . The males also return to their birthplaces in order to mate . These males that return to their homes know they will be able to find mates because the females born there also return to breed . By doing this, the green sea turtles are able to improve their reproductive success and is why they are willing to expend the energy to travel thousands of miles across the ocean in order to reproduce . </P>

Where does the green sea turtle migrate to
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