The Georgia Aquarium is the world's largest aquarium covering 13 acres and home to tens of thousands of animals, including 500 species from around the world. The Georgia Aquarium holds more than 8 million gallons of fresh and salt water and features 60 habitats for visitors to explore. The largest exhibit holds 6.2 million gallons of water. It houses thousands of animals including four whale sharks and manta rays. The second largest exhibit holds four beluga whales. Other features of the Georgia Aquarium include a 4-D theater. In 2011, Georgia Aquarium will unveil its largest expansion to date. The new $110 million dolphin gallery will feature a unique dolphin show, where guests will be treated to a theatrical performance by actors and dolphins utilizing state-of-the-art lighting and special effects.