Green sea turtles normally live in the Pacific’s warmer latitudes. Their numbers are dwindling because of development along the beaches they use to nest, and because they sometimes become snared in industrial fishing nets and drown.

Climate change has also affected the ancient reptiles. Because temperature determines their gender when they hatch, females vastly outnumber males these days. And the warmer ocean currents tend to take the turtles places they’re not accustomed to going, such as San Francisco Bay.