A plastic bag floating in the waters of Elphinston Reef, near Marsa Alam, is easily mistaken for a jellyfish. Garbage such as this snares and chokes marine animals which misjudge its shimmering appeal. Elphinston Reef is a spectacular reef and one of the most beautiful sites in the region. Crystal clear waters and unique coral reefs have made the Red Sea one of the world's prime diving destinations. Yet these reefs are threatened by problems such as overfishing, pollution and uncontrolled coastal development.