雌海龟把蛋产在海滩的沙子下面,经过8至9周的孵化后,小海龟便回归大海。在回归自己家园的道路上,小海龟会遇到不少天敌,比如,各种专吃小海龟的海鸟。但是小海龟回归大海时会用自己的智慧来避免危险,物竞天择和生存的智慧教给了小海龟们一些方法,成为与生俱来的一种基因沉积在海龟的血液和骨髓中。这种方法就像人类投石问路—样…… The female turtles lay eggs under the sand of the beach. After 8 to 9 weeks of hatching, the turtles return to the sea. On their way back to their homeland, the little turtle will encounter many natural enemies, for example, various seabirds that eat special sea turtles. But when the sea turtle returns to the sea, it uses its own wisdom to avoid danger. The natural selection and survival wisdom teaches the little turtles some ways to become born with a gene deposited in the blood and bone marrow of the turtle. This method is like humans throwing stones to ask for directions...