Mantanani Island is a beautiful and serene island located off the northwest coast of Sabah, Borneo. It is a part of the Mantanani Islands group, which consists of three isolated islands - Mantanani Besar, Mantanani Kecil, and Lungisan. The island is known for its crystal-clear waters, pristine white sandy beaches, and vibrant marine life, making it a popular destination for snorkeling and diving enthusiasts. The island is surrounded by coral reefs, which are home to a diverse range of marine species, including colorful fish, sea turtles, and even dugongs. The underwater visibility is excellent, making it an ideal spot for underwater photography and exploration.