According to Guinness, the Hengqin Ocean Kingdom - which is referred everywhere else as the Chimelong Ocean Paradise holds 5 new records including the world's largest aquarium tank at 5.99M US gallons, and world's largest aqaurium at 12.87M gallons. Never even heard of this place until today. Whale sharks, mantas, sunfish, beluga, at least 2 dolphin species including Chinese white dolphin, etc What's odd to me, is that Ocean Voyager at Georgia Aquarium is supposedly 6.3M US gallons. And I'm curious - does anyone know why Shamu Stadium, at 7M gallons, hasn't been considered the largest aquarium? Because it's outdoors? Sea World San Diego/Orlando must be close to that 13M.