Pacific green sea turtles spend years cruising this northern Australia feeding ground, fattening up on sea grasses before heading to nesting areas to mate and lay eggs. Since the sex of a sea turtle is determined by the heat of sand incubating their eggs, scientists had suspected they might see slightly more females. Climate change, after all, has driven air and sea temperatures higher, which, in these creatures, favors female offspring. But instead, they found female sea turtles from the Pacific Ocean’s largest and most important green sea turtle rookery now outnumber males by at least 116 to 1.
— source news.nationalgeographic.com