San Diego's Legoland theme park just opened the doors on its sister facility, SEA LIFE Aquarium. The Aquarium is 175,000 gallons in total with one large main tank, featuring an acrylic walk-thru tube, sea horse exhibits, and tidal pool touch tanks. The tanks will include over 70 lego statues including a 10 foot creation of Poseidon.
This SEA LIFE Aquarium, one of the over 20 of the SEA LIFE branded aquariums centered in Europe, is focused on regional fauna, including both sea and fresh water of California.
For reference, the Georgia Aquarium, which is one of the largest, if not the largest, aquarium in the world (depending on which stats you chose to use), holds a total of over 8 million gallons of water. The Ocean Voyager tank alone, in which lives the Aquarium's whale sharks, holds over 6 million gallons. The Shamu Show facility at Sea World Orlando, including all back of house pools and show pools, holds approximately 7 million gallons of water.