Real-life mermaids swim in the waters around South Korea's Jeju Island. They may not have fish tails, but these women are equally at east on land and at sea. For generations, these brave, hardworking mermaids have been diving into dangerous waters to fed their families and earn a living. Find out why the women of Jeju have become famous for their diving skills - and why their way of life is now in danger of disappearing forever.