Construction for Aquaria KLCC started in 2003. It was officially opened in August 2005.
Featuring 60,000 square feet (5,600 m2) in two levels with a 90-metre (300 ft) underwater tunnel, Aquaria KLCC houses over 250 different species and over 5,000 land and aquatic animals from Malaysia and around the world. Interactive information kiosks on fish and turtle conservation. It includes a themed retail area of about 5,000 square feet (460 m2). Aquaria KLCC is based on the journey of water from the land to the sea. The journey starts in the misty highlands, down through rivers, through the rainforest and mangroves to the coral reefs into the deep blue sea.