cloied taylor lives in tortuguero. when the turtles hatch, he patrols the beach to protect them. to be very different. cloied: tortuguero was an isolated place. survival didn't revolve around money like it does today with tourism. we used to kill the turtles. we ate the eggs, we ate the meat, we ate the fins. reporter: the turtles have already travelled up to 2000 kilometers by the time they arrive at the beach to lay their eggs in the tortuguero national park. four different species of sea turtles lay their eggs on tortuguero beach, including hawksbill and leatherback turtles. gloria guerrero is a biologist with the tortuguero sea turtle conservancy. she's concerned because climate change is making the sand warmer and the higher the temperature, the fewer males are born. this poses yet another danger to the turtles' survival. gloria: out of 1000 baby turtles, only one comes back to lay its eggs on the beach. reporter: the turtles follow the light of the moon to find their way onto the beach to lay their eggs. they only come out of the sea at night. a single female lays up to 120