There are seven main species of sea turtles: loggerhead, green, leatherback, flatback, hawksbill, Kemp's ridley, and olive ridley. They live in oceans around the world and eat seaweed, crustaceans, jellyfish, and fish. Sea turtles are endangered due to threats like becoming tangled in nets, disease, pollution, and being captured. We can help sea turtles by avoiding beach development, not polluting beaches, and not capturing sea turtles.