Mother Nature Network has a slide show of eight eco-friendly beaches around the world.
Among the beaches are:
Whitehaven Beach, Whitsundays Island, Australia (picture): won the award for "Cleanest beach in Queensland."
Koh Libong, Trang Province, Thailand
Las Islas Cies, Galicia, Spain
See the slide show: 8 of the greatest eco-friendly beaches in the world
Photo from Tourism Whitsundays