Climate change does weird things to endangered green sea turtles.
The Hawaiian Green Turtle - A Sea Turtle Page
The hatching success of undisturbed nests is typically high. The Hawaiian green turtle enjoys the benefits of a protected and isolated nesting habitat and low levels of predation. Unlike many nesting areas throughout the world, there are no nest-raiding predators (not even humans) in the French Frigate Shoals. Ghost crabs prey upon hatchlings, but estimates of losses to crabs do not exceed 5%. Unlike other nesting beaches throughout the world, hatchlings are not greeted by predatory birds, and the loss to carnivorous fishes does not appear to be significant. Hatchlings in the French Frigate Shoals do not suffer from human interference either; there are no distracting lights from developments and no destructive beach activities.
Green Sea Turtle - Sea Turtle Facts and Information
The navigation feats of the green turtle are well known, but poorly understood. We know that hatchlings and adult females on the nesting beach orient toward the ocean using light cues. For a long time, no one knew what cues were employed in pelagic movements, in movements among foraging grounds, or in migrations between foraging grounds and nesting beaches. Recently published work, however, has suggested that the earth's magnetic field plays a role in these feats.
Sea Turtle Conservation | Gumbo Limbo Nature Center
Hawaiian green turtles nest in the isolated French Frigate Shoals, but forage throughout the entire Hawaiian Archipelago, a range of 2450 km. Tagging has indicated that most Hawaiian green turtles seem to settle at a specific foraging ground and leave only to reproduce. Our observations at Honokowai strongly support this theory, since we have seen the same core group of animals every year since 1989.
“Oil spills are deadly to sea turtles
Females deposit egg clutches on beaches in the French Frigate Shoals, digging a deep nest cavity above the high water line. Eggs incubate for approximately 65 days before hatching. Hatchlings leave the beach and apparently move into convergence zones in the open ocean where they spend an undetermined length of time. Hawaiian green turtles reach a carapace length of approximately 35 cm, about 10 cm larger than juveniles of other green turtle populations, before leaving the pelagic habitat and entering benthic feeding grounds.