Nusa Penida is the largest of the 3 Sisters Island, along with Lembongan and Ceningan. About one and a half hours from Bali by motor boat, Nusa Penida in the south offers some truly spectacular and unspoiled diving and snorkeling. An abudance of hard and soft corals provide a home for huge numbers of tropical fish such as Angel fish and clown fish. Nusa Penida also offers the chance to see turtles, shark, mola-mola, and healthy reefs in fantastic visibility. However, the currents are fast and unpredictable so you must go, not only with a reputable dive operator, but also with a guide who knows how to 'read' the currents. Most of the diving is along the north and northeast coasts and in the strait between Nusa Penida and Ceningan. Manta Point is located off the southwest of the island. Moray eels live in the crevices and Whitetip Reef Sharks search for food at night and sleep by day under table corals.

Nusa Penida has unfortunately acquired a somewhat notorious reputation, as it was once the place of exile for criminals and undesirables from the Kingdom of Klungkung. Nusa Penida attracts a number of visitors for its seclusion, surf and snorkeling. Few facilities exist for tourist but there are a few losmens and a number of small warungs.