Batu Bolong, Komodo National Park

Batu Bolong, in Komodo National Park, is ranked among the best dive sites on the planet — an isolated volcanic rock whose sheer vertical walls are covered with one of the highest densities of soft corals, gorgonians, and sponges in Indonesia. Strong multidirectional currents attract grey reef sharks, manta rays, barracudas, and schools of trevally in extraordinary biodiversity.