The S. E. A. Aquarium (South East Asia Aquarium) was the world's largest aquarium by total water volume until overtaken by Chimelong Ocean Kingdom in Hengqin, China. It contains a total of 45,000,000 litres (9,900,000 imp gal; 12,000,000 US gal) of water for more than 100,000 marine animals of over 800 species. The aquarium comprises 10 zones with 49 habitats. The centerpiece of the aquarium is the Open Ocean tank with more than 18,000,000 l (4,000,000 imp gal; 4,800,000 US gal) and 50,000 animals. Until 2014 when eclipsed by China's Chimelong Ocean Kingdom, it had the world's largest viewing panel, 36-metre (118 ft) wide and 8. 3-metre (27 ft) tall, which is intended to give visitors the feeling of being on the ocean floor. They also have a conservation group called Guardians of the S. E. A. A. , which supports research, education and public engagement efforts to protect the marine environment.