Georgia Aquarium holds the title of largest aquarium in the US
The Georgia Aquarium in Atlanta is the largest aquarium in the United States by total water volume. It holds 11 million gallons of water across its exhibits, making it substantially larger than any other public aquarium in the country. The facility opened in 2005 and remains the primary destination for visitors seeking to see the widest range of marine life under one roof in America.
The aquarium's size allows it to house animals that require enormous amounts of space, including whale sharks, beluga whales, and manta rays. These species need the kind of volume that smaller facilities straightforward cannot provide. The scale of the operation also means the aquarium maintains complex filtration and life-support systems that run continuously to keep the water conditions stable for thousands of animals.
Key Takeaways
- The Georgia Aquarium in Atlanta contains 11 million gallons of water, making it the largest in the United States.
- The facility is home to whale sharks, beluga whales, manta rays, and thousands of other marine species across multiple themed galleries.
- The aquarium's size required innovative engineering solutions for water circulation, temperature control, and animal care systems.
- Other major US aquariums like the Monterey Bay Aquarium in California and the Shedd Aquarium in Chicago are significantly smaller by volume.
What makes the Georgia Aquarium so much larger than others
The Georgia Aquarium was built with a specific mission: to create an environment where the largest marine animals could be displayed safely and healthily. The main tank, called the Ocean Voyager, accounts for 6.3 million gallons of that total volume by itself. This single exhibit is larger than most entire aquariums in other cities, and it was designed specifically to accommodate whale sharks, which are the largest fish species in the world.
The facility also includes separate galleries for beluga whales, sea otters, tropical fish, and cold-water species. Each section has its own water systems, temperature controls, and filtration equipment. The sheer number of distinct exhibits—each requiring independent life-support infrastructure—contributes to the overall size and complexity of the building. This modular approach allows the aquarium to maintain different water conditions for different species simultaneously.
How the Georgia Aquarium compares to other major US facilities
The second-largest aquarium in the United States is the Monterey Bay Aquarium in California, which holds approximately 750,000 gallons. That means the Georgia Aquarium holds roughly 15 times more water. The Shedd Aquarium in Chicago, one of the oldest and most famous aquariums in the country, contains about 5 million gallons—less than half the Georgia Aquarium's volume.
These differences reflect different design philosophies. Monterey Bay focuses on local Pacific Ocean species and is known for its kelp forest exhibit and sea otter programs. The Shedd Aquarium emphasizes education and research alongside display. The Georgia Aquarium prioritizes sheer scale and the ability to house the largest species, which requires the massive water volume and the engineering systems to support it.
The engineering systems that support 11 million gallons
Maintaining 11 million gallons of water requires constant circulation and filtration. The Georgia Aquarium uses a combination of mechanical and biological filtration to keep the water clean and safe for the animals. Water is continuously cycled through filter systems that remove waste, uneaten food, and other particles. The facility also monitors chemical levels—salinity, pH, oxygen, and nitrogen compounds—around the clock.
Temperature control is another major engineering challenge. Different exhibits maintain different temperatures: the tropical galleries stay warm, while the cold-water exhibits for beluga whales and other Arctic species require refrigeration systems. The aquarium also has backup power systems and redundant equipment for critical functions, because a failure in filtration or temperature control could harm or kill the animals within hours.
What animals live in the Georgia Aquarium
The Georgia Aquarium is home to whale sharks, which can grow to 40 feet long and weigh as much as a school bus. The facility also houses beluga whales, which are smaller but still require enormous space and specialized care. Manta rays, sea otters, sea lions, and thousands of species of fish—from tiny seahorses to large groupers—live in various exhibits throughout the building.
The animal collection changes somewhat over time as individual animals age, are transferred to other facilities, or pass away. The aquarium participates in breeding programs for endangered species and works with other institutions to maintain healthy populations of animals in human care. The variety of species on display is one reason the facility requires so much water volume—different animals need different water conditions, salinity levels, and temperatures.
How the aquarium's size affects visitor experience
The massive size of the Georgia Aquarium means visitors can spend an entire day exploring without seeing everything. The facility spans multiple floors and includes both large open galleries where you can view whale sharks and beluga whales, and smaller, more intimate exhibits. The layout allows crowds to spread out across different areas, so even on busy days, individual exhibits do not feel as crowded as they might in a smaller facility.
The scale also allows the aquarium to create more naturalistic environments for the animals. Larger tanks mean animals can swim longer distances and exhibit more natural behaviors. For species like whale sharks that migrate thousands of miles in the ocean, even an 11-million-gallon tank is a fraction of their natural range, but it is substantially better than what smaller facilities can offer.
Frequently Asked Questions
Is the Georgia Aquarium the largest aquarium in the world?
No. The Georgia Aquarium is the largest in the United States, but the Okinawa Churaumi Aquarium in Japan is larger, holding approximately 22.5 million gallons. Several other international aquariums also exceed the Georgia Aquarium in size.
Can you see whale sharks at other US aquariums?
The Georgia Aquarium is the only facility in the United States that currently displays whale sharks. A few other countries have whale sharks in captivity, but the Georgia Aquarium's Ocean Voyager tank was specifically designed to accommodate them.
How often does the water get completely replaced?
The water is not completely replaced on a schedule. Instead, it is continuously filtered and treated. Small amounts of water are added to replace what evaporates, and water is removed during cleaning and maintenance, but the bulk of the water remains in the system and is recycled through filtration.
How much does it cost to visit the Georgia Aquarium?
Admission prices vary by season and ticket type. General admission typically ranges from around $30 to $40 for adults, with discounts for children, seniors, and members. Prices are higher during peak travel seasons and lower during slower periods. Check the aquarium's website for current pricing.
How long does it take to see everything at the Georgia Aquarium?
Most visitors spend four to six hours at the aquarium, though you could spend longer if you watch animal demonstrations, read all the educational materials, or visit the gift shop. A quick tour of the main exhibits takes about two to three hours.