Pigeon Island National Park In the area of Pigeon Island, 3 km from the Nilaveli Beach , Manin Activities is Snorkelling you'll see colourful corals, eels, small groups of different fish or colourful drawn boxfish. Let yourself drift while iridescent parrotfish and damselfish pass slowly. Filigree Lined sweetlips fish standing elegantly in the flow , butterfly fish and banner fish dancing before the dark blue curtain of the sea. With some luck you have encounters with turtles, various species of ray or even blacktip reef sharks there.