loggerhead turtle (Caretta caretta)
Loggerhead turtles spawn only in the Japanese archipelago in the North Pacific, and Yakushima is the largest spawning ground in Japan.
Spawning begins in late April and continues until early August. Eggs laid on the beach are heated by geothermal heat and hatch in about two months.
After hatching, the hatchlings move to the upper part of the burrow for 3~7 days from under 60cm of sand, wait until night falls near the ground, escape from the burrow at once, and depart for the open sea.
It is said that hatchlings that enter the sea continue to swim, go out to the open sea, live in the open sea for several years to several decades, and when they grow up, they return to their birthplace, Yakushima, to lay eggs.