Malaysia's water experiences are spread across three coastlines and the interior river system. Langkawi island boat tours — island-hopping between the 99-island archipelago's sea eagle feeding stations, mangrove kayaking tours through the UNESCO Geopark limestone caves, and sunset sailing from Pantai Tengah — are the flagship coastal offering. Penang ferry crossings and heritage harbour tours, Sabah whale shark snorkelling at Donsol, and Borneo river expeditions up the Kinabatangan and Rajang rivers to spot proboscis monkeys, pygmy elephants, and orangutans from flat-bottomed vessels add the wildlife river register. The Perhentian and Tioman islands offer reef snorkelling and diving boat tours, while the Sarawak river systems provide indigenous longhouse community boat connections entirely different from the resort coast.