It’s a tale as old as time: girl travels halfway around the world in search of someone she hasn’t even met yet. In a crowded sea of faces she finds them, their eyes lock, and …a week goes by with no call. After a few months, she crawls up onto the beach in the middle of the night to bury 50–100 eggs all alone…wait. What?

This is the love story of the leatherback sea turtle, just one of the many threatened and endangered species that travel impressive lengths to find a mate. Click here to learn about the many other animals that go the distance in search of love.