A $250 million donation from businessman Bernard Marcus's foundation provided the bulk of the money needed to build and stock the new facility.
The Aquarium's notable specimens include whale sharks, beluga whales, California sea lions, bottlenose dolphins, and manta rays.
The first exhibit, Southern Company River Scout, reflects regional environments. It features an overhead river where visitors can see North American fish from the bottom up. In addition to local specimens, this exhibit displays piranha, electric eel, and other unusual freshwater life.
The second section of the aquarium, Cold Water Quest, features animals from the polar and temperate regions of the world and contains most of the mammal species in the aquarium's collection. This exhibit includes beluga whales in a 760,000 US gallons (2,900,000 L) tank, sea otter, Japanese spider crab, weedy sea dragon, and African penguin.
The largest exhibit, Ocean Voyager built by Home Depot, contains 6.3-million-U.S.-gallon (24,000,000 l) of water and several thousand fish. It measures 284 ft × 126 ft (87 m × 38 m) and the depth ranges between 20 and 30 ft (6.1 and 9.1 m), making it the largest indoor aquatic habitat in the world. This exhibit is designed to feature the life of the Mesoamerican Barrier Reef System and showcases the aquarium's whale sharks, as well as a 100 ft (30 m) underwater tunnel and one of the world's largest viewing windows.
The fourth exhibit, Tropical Diver, features mainly Indo-Pacific tropical fish. The largest habitat in the exhibit is a 164,000-US-gallon (620,000 L) reef featuring many species of fish. The aquarium also cultivates its own live coral, some of which can be seen on this large reef. Other animals in this gallery include seahorses, garden eel, jellyfish, clownfish, Bluespotted ribbontail ray, shrimp, lobsters, Red lionfish, and many other tropical fishes.
The Suntrust Georgia Explorer gallery included a number of fish native to Georgia and areas off the coast of Georgia. It is the aquarium's only former exhibit, having been closed in 2015 to make way for the Suntrust Pier 225.
In 2018, the aquarium announced its largest expansion to date, a $100m, 45,000-square-foot endeavor featuring a new 1 million US gallons (3,800,000 L) saltwater shark gallery and redesigned main entrance, planned to be completed in late Fall 2020. Some animals which will be housed in this exhibit include Scalloped hammerhead sharks, Silvertip shark, Sandbar shark, Sand tiger shark and the tiger shark.A temporary entrance will be constructed by the end of 2018 to facilitate construction.
According to wikipedia