Underwater World Langkawi is spread over an incredible six acres and is one of the best-known attractions of the island. Located within a 5-minute driving distance from Pelangi Beach Resort & Spa via Jalan Pantai Chenang, this is also the most-extensive aquarium in Malaysia. This massive white structure boasts housing over 200 different species; these include sharks, harbour seals, large rays, rockhopper penguins, and even the gigantic Amazonian Arapaima – the largest freshwater fish in the world. Langkawi Underwater World consists of three sections (Tropical Rainforest, Temperate, and Sub-Antarctic). Other highlights of this place include an Educational Resource Centre, a 3D theatre, and even a humongous walk-through tunnel of water, which houses a mélange of marine creatures.