This crescent-shaped beach with fine sand and relatively calm waters is located on Nusa Lembongan island near Bali. It is a tranquil and beautiful place to behold and also a great spot for various activities including surfing (there is also surf school), snorkeling and obviously swimming.
Wikitravel http://wikitravel.org/en/Nusa_Lembongan
Official website http://www.mushroom-lembongan.com/
Address Jalan Raya Jungut Batu, Nusapenida, Indonesia
Coordinates -8°40'56.738" N 115°26'0.406" E