The Georgia Aquarium is a public aquarium located in Atlanta, Georgia. It has seven large galleries with hundreds of species and thousands of animals, all of which are housed in almost 11 million US gallons (42,000 m3) of water. From its opening in 2005 until 2012, when it was surpassed by the S.E.A. Aquarium in Singapore and the Chimelong Ocean Kingdom in China, it was the world's largest aquarium; the Georgia Aquarium remains the largest aquarium in the United States.

The majority of the funds needed to develop and stock the new facility came from a $250 million bequest from the foundation of local merchants and The Home Depot co-founder Bernard Marcus.

Whale sharks, beluga whales, California sea lions, bottlenose dolphins, and manta rays are among the Aquarium's most noteworthy exhibits. Its centerpiece is a whale shark exhibit with 6.3 million US gallons (24,000 m3) of water.

Monterey Bay Aquarium is a public aquarium in Monterey, California, that is run by a nonprofit organization. It was the first to exhibit a living kelp forest when it debuted in October 1984, and it is known for its regional concentration on the marine environments of Monterey Bay. Its biologists were the first to effectively care for and display a great white shark, and it was the first to pioneer the animal husbandry of jellyfish. Sea otters, numerous birds, and tunas are all part of the organization's study and conservation initiatives. The aquarium's Seafood Watch, a sustainable seafood advice list issued since 1999, has affected the conversation about sustainable seafood.

Early suggestions for a public aquarium in Monterey County were unsuccessful, but in the late 1970s, a group of four marine biologists linked with Stanford University resurrected the idea. The American Institute of Architects has acknowledged the Monterey Bay Aquarium for its architectural achievements, which was erected on the site of a destroyed sardine cannery. The aquarium has garnered multiple honors for its exhibits of marine life, ocean conservation activities, and educational programs, in addition to its design.

Every year, nearly two million people visit the Monterey Bay Aquarium. It has resulted in the rebirth of Cannery Row and the generation of hundreds of millions of dollars for the Monterey County economy.

The aquarium has been featured in film and television productions, in addition to two PBS Nature programs.

The National Aquarium, also known as National Aquarium in Baltimore and formerly known as Baltimore Aquarium, is a non-profit public aquarium in downtown Baltimore, Maryland, United States, located at 501 East Pratt Street on Pier 3 in the Inner Harbor neighborhood. The aquarium opened on August 8, 1981, at an era of urban renewal in Baltimore. The aquarium attracts 1.5 million visitors each year, making it Maryland's most popular tourist destination. The aquarium includes around 17,000 specimens representing over 750 species and holds over 2,200,000 US gallons (8,300,000 l) of water. The purpose of the National Aquarium is to inspire people to protect the world's aquatic riches.The aquarium's stated mission is to use cutting-edge science, conservation, and educational programming to address major concerns affecting worldwide aquatic environments.

The Upland Tropical Rain Forest, a multi-story Atlantic Coral Reef, an open ocean shark tank, and Australia: Wild Extremes, which earned the Association of Zoos and Aquariums' Best Exhibit award in 2008, are among the exhibits of the National Aquarium. A 4D Immersion Theater is also available at the aquarium. In 1990, the aquarium erected a marine mammal pavilion on Pier 4's adjacent south end, which now houses six Atlantic bottlenose dolphins. Five of the six were born at the National Aquarium, with the sixth being born at another American aquarium.

The National Aquarium and the National Aquarium in Washington, D.C., which is much older and independent, forged an association in 2003 to operate as a single National Aquarium with two locations. The Washington site remained open until 2013, when it was permanently closed.

The New England Aquarium, located near Boston, Massachusetts, is a public aquarium. The Simons Theatre and the New England Aquarium Whale Watch, which operates from April to November, are among the attractions of the New England Aquarium, in addition to the main aquarium building. The aquarium has around 22,000 members and attracts over 1.3 million visitors annually.

In Toronto, Ontario, Canada, Ripley's Aquarium of Canada is a public aquarium. Ripley Entertainment owns and operates three aquariums in the United States. It is located southeast of the CN Tower in downtown Toronto. The aquarium houses marine and freshwater environments from throughout the world, totaling 5.7 million litres (1.25 million gallons). More than 20,000 unique sea and freshwater specimens from more than 450 species are on display in the exhibitions.

SEA LIFE Sydney Aquarium (previously Sydney Aquarium) is a public aquarium that showcases a wide range of Australian aquatic life, with over 700 species and over 13,000 individual fish and other sea and water creatures from all of Australia's water environments on display. It was opened in 1988 and is considered one of Sydney's top tourist attractions, with over 55 percent of tourists coming from outside the country each year.

Jurassic Seas, Discovery Rockpool, Shark Walk, and the world's largest Great Barrier Reef display are among the 14 themed zones within the aquarium. Visitors will see wildlife unique to each environment along the way, including one of only four dugongs on show in the world, as well as sharks, stingrays, penguins, and tropical fish.

The Sydney Aquarium is a public aquarium in Sydney, New South Wales, Australia. It is located to the north of the Pyrmont Bridge on the eastern (city) side of Darling Harbour. The Zoo and Aquarium Association (ZAA) and the World Association of Zoos and Aquariums both recognize it as a full institutional member (WAZA).