What the Georgia Aquarium has said about adding whale sharks

The Georgia Aquarium in Atlanta currently holds four whale sharks in its Ocean Voyager exhibit — the largest aquarium tank in the world by volume. The aquarium has not announced public plans to add more whale sharks to this exhibit. Whale sharks are the world's largest fish, and housing them requires enormous resources: the Ocean Voyager tank holds 6.3 million gallons of water, costs millions of dollars annually to maintain, and requires a specialized team of veterinarians and animal care staff.

The aquarium's leadership has focused recent expansion efforts on other species and exhibits rather than expanding the whale shark population. Any decision to house additional whale sharks would require approval from the Association of Zoos and Aquariums (AZA), which oversees breeding and placement recommendations for whale sharks in human care. The AZA maintains a studbook — a detailed genetic record — of every whale shark in captivity worldwide to prevent inbreeding and may support the health of any animals added to facilities.

Whale shark acquisitions are rare events. The Georgia Aquarium's four whale sharks arrived between 2006 and 2007, and no new whale sharks have been added since then. Any future addition would depend on whether a whale shark became available through the AZA network, whether the aquarium had the financial resources to support it, and whether the animal's genetics would benefit the captive population.

Key Takeaways

  • The Georgia Aquarium currently houses four whale sharks and has made no public announcement about acquiring more.
  • Adding a whale shark requires approval from the Association of Zoos and Aquariums, which manages a genetic studbook for all whale sharks in captivity.
  • The Ocean Voyager exhibit is already one of the largest aquarium tanks in the world, and expanding it further would require enormous financial investment.
  • Whale shark acquisitions happen rarely — the Georgia Aquarium's last addition was in 2007, and availability depends on the AZA network and breeding recommendations.

How the AZA decides which aquariums get whale sharks

The Association of Zoos and Aquariums maintains strict guidelines about which facilities can house whale sharks and when new animals can be transferred between locations. The AZA's Whale Shark Studbook tracks the lineage, health records, and genetic makeup of every whale shark in captivity. Before any whale shark moves to a new facility or breeding occurs, the AZA reviews the studbook to determine whether that animal would strengthen or weaken the genetic diversity of the captive population.

This process means that even if the Georgia Aquarium wanted to add a whale shark tomorrow, one might not be available. A whale shark would need to become surplus at another facility, or a breeding recommendation would need to call for a transfer. The AZA prioritizes the long-term health of whale sharks in human care over the preferences of individual aquariums, which sometimes means animals stay where they are even if another facility has space and resources.

The studbook also tracks wild-caught versus captive-born animals. Most whale sharks in aquariums today were captured from the wild decades ago. The AZA discourages new wild captures and instead focuses on managing the existing captive population. This approach limits the total number of whale sharks that can enter the system, making each animal in a facility like the Georgia Aquarium particularly valuable for research and conservation education.

The cost and space challenges of housing whale sharks

The Ocean Voyager exhibit represents an extraordinary investment. The tank itself cost tens of millions of dollars to build, and the annual operating cost — including water treatment, food, veterinary care, and specialized staffing — runs into the millions. A single whale shark eats hundreds of pounds of food per day, typically a mix of fish eggs, small fish, and specialized pellets. The water must be kept at precise temperatures and salinity levels, and the filtration system must handle the volume and waste produced by these massive animals.

Expanding the exhibit to hold additional whale sharks would require either building a second tank or enlarging the existing one. Both options would demand capital investment that most aquariums reserve for other priorities: new exhibits, facility upgrades, or conservation programs. The Georgia Aquarium, like most major institutions, balances multiple demands on its budget and must decide whether adding a fifth whale shark represents the best use of those resources compared to other projects.

The specialized informed required also matters. The Georgia Aquarium employs veterinarians and animal behaviorists with decades of experience managing whale sharks. Training new staff to this level takes years. Adding more animals means adding more staff, which increases operational costs beyond just the direct care of the fish themselves.

What research and conservation work the current whale sharks support

The four whale sharks at the Georgia Aquarium contribute to scientific research that benefits the species in the wild. Researchers study their behavior, nutrition, reproduction, and health to understand whale sharks better and to inform conservation efforts in the ocean. The aquarium's whale sharks have participated in studies on feeding behavior, growth rates, and the effects of different water conditions — knowledge that cannot be gathered from wild populations as easily.

The aquarium also uses its whale sharks for education. Millions of visitors see the Ocean Voyager exhibit each year and learn about whale shark biology, ocean conservation, and the threats these animals face in the wild. This educational mission is part of why the aquarium maintains the exhibit, and it represents a form of conservation work that does not require adding more animals.

The Georgia Aquarium funds field research on whale sharks in their natural habitats as well. Money that might go toward acquiring and housing a fifth whale shark could instead support scientists studying wild populations in the Caribbean, the Gulf of Mexico, or other regions. The aquarium's leadership may determine that this approach — supporting wild research rather than expanding captive populations — better serves whale shark conservation overall.

How whale shark populations are managed in aquariums worldwide

Only a handful of aquariums in the world house whale sharks. The Georgia Aquarium holds four. The Okinawa Churaumi Aquarium in Japan holds three. The Atlantis Resort in the Bahamas holds a smaller number. A few other facilities have held whale sharks at various times, but the total captive population remains small — fewer than 15 animals worldwide at any given time.

This limited population means that every whale shark in captivity is managed as part of a single global network. The AZA coordinates with international partners to may support that breeding recommendations and transfers serve the long-term health of the species. If a whale shark at the Georgia Aquarium were to breed successfully, the AZA might recommend that offspring go to another facility to establish a new population there, rather than remaining in Atlanta.

The rarity of whale sharks in captivity also reflects the challenges of capturing and transporting these animals. Whale sharks are large, sensitive to stress, and difficult to move. Most of the whale sharks in aquariums today were captured 15 to 20 years ago, when attitudes toward wild capture were different. Modern conservation ethics and international agreements make new wild captures unlikely, which means the captive population will remain relatively stable unless breeding produces new animals.

Breeding programs and the possibility of captive-born whale sharks

Whale sharks rarely breed in captivity. The Georgia Aquarium's four whale sharks have not produced offspring, despite being housed together for years. Breeding whale sharks in tanks remains poorly understood — scientists do not yet know all the conditions required to trigger reproduction in captive animals. This lack of breeding success is one reason why the captive population has remained small and why new animals cannot straightforward be produced within the system.

If breeding did occur at the Georgia Aquarium or another facility, it would represent a major scientific achievement. Captive-born whale sharks would reduce the need to rely on wild-caught animals and could eventually allow the captive population to grow without further wild captures. However, this remains theoretical. Until aquariums solve the breeding puzzle, the whale shark population in human care will depend on the animals already in the system and any future transfers recommended by the AZA.

Research into whale shark reproduction is ongoing, and some facilities are studying the hormonal and environmental factors that might encourage breeding. Success in this area could change the future of whale sharks in aquariums, but it remains years away at minimum. For now, the Georgia Aquarium's four whale sharks represent a stable, long-term commitment rather than the beginning of a growing population.

Frequently Asked Questions

Why doesn't the Georgia Aquarium just buy another whale shark if it has the space?

Whale sharks cannot be purchased on the open market. The AZA controls which animals can move between facilities based on genetic studbooks and breeding recommendations. Even if the aquarium had unlimited money and space, it could only acquire a whale shark if one became available through the AZA network and if the transfer served the long-term health of the captive population.

Are whale sharks endangered in the wild?

Whale sharks are listed as vulnerable by the International Union for Conservation of Nature (IUCN), meaning they face threats but are not yet endangered. They are hunted in some regions, affected by fishing nets, and vulnerable to climate change. Conservation efforts focus on protecting wild populations and their habitats rather than expanding captive populations.

Could the Georgia Aquarium build a second whale shark tank?

Technically yes, but it would require enormous capital investment and ongoing operational costs. The aquarium would need to decide whether this project takes priority over other exhibits, conservation programs, or facility improvements. No such project has been announced, and the current four-whale-shark exhibit appears to represent the aquarium's long-term commitment to the species.

What happens to whale sharks when they get too old to live in the aquarium?

Whale sharks in captivity can live for decades. The Georgia Aquarium's oldest whale shark, named Whale Shark, arrived in 2006 and is still living. When a whale shark reaches the end of its life, the aquarium provides end-of-life care. There is no plan to release captive whale sharks back into the ocean, as they would not survive in the wild after years in human care.

Does the Georgia Aquarium work with other aquariums to share whale shark care?

The Georgia Aquarium coordinates with other facilities through the AZA network and shares research findings about whale shark health and behavior. However, whale sharks are not typically loaned or transferred between aquariums for short periods. Any permanent transfer would be a major event managed by the AZA based on breeding and genetic recommendations.