Malapascua is also special in that it is in an area of ocean that has the highest concentration of biodiversity in the world.  What this means is that there are many dive sites that offer equally beautiful and unique dives: the mandarin fishes that perform their mating dance every evening at sunset at the Lighthouse; the island of Gato, marine reserve and sanctuary for the sea snakes, famous for pygmy seahorses, whitetip sharks, nudibranchs and big cuttlefish; Lapus Lapus, where you see the frog fish, hiding among the colourful corals; Ka Osting, a muck dive that’s easy and fun, where you can go in search of the blue-ringed octopus; and the island of Calanggaman, which is an uninhabited tropical paradise on the surface but hides underwater walls rich in marine life.