As of 2026, the Chimelong Ocean Kingdom in Hengqin, Zhuhai, China, remains the largest aquarium in the world. It holds multiple Guinness World Records, including the record for the largest total water volume (12.87 million gallons) and the largest aquarium window. Its centerpiece is the Whale Shark Exhibit, which features a massive tank designed to house multiple whale sharks alongside thousands of other fish and manta rays. Following closely is the S.E.A. Aquarium in Singapore and the Georgia Aquarium in the United States, which was the largest in the world until 2014. These massive facilities utilize advanced life-support systems to manage water chemistry and filtration on an industrial scale. They serve as critical centers for marine research and conservation education, though they often face scrutiny regarding the ethics of housing large migratory species like whale sharks and beluga whales in enclosed environments.