One of the largest marine aquariums in Malaysia, but rather in Asia, and contains several species of sea fish preserved in more than 100 aquariums. This basin is considered one of the main tourist destinations in Langkawi, and has attracted a large number of foreigners as well as local tourists. You can walk 15 meters through a tunnel inside this aquarium and enjoy seeing many aquatic life, including sharks, which swim a few centimeters away from you, separated from you by toughened glass that is unique in the world. The complex extends over an area of 6 hectares to accommodate 200 species of aquatic life, divided into three sections, some of which live in tropical rainforest regions, semi-tropical and temperate regions, and the third and most attractive section for tourists is the sub-polar regions, which includes penguins.