You've heard of white and black sand, even red, but would you like this green sand beach in Hawaii?
Watch out sunbathers! 75 Mile Beach is not only a beach, but also a runway and a motorway.
This 1.5 kilometers strip of sand has become the most popular beach in South Korea, being invaded by more than 100,000 people each sunny day.
A beautiful black sand beach on Hawaii's Big Island, home to endangered species of turtles.