Georgia Aquarium

Step inside, and the first thing you notice is the light. It is soft, blue, and always moving. It ripples across the floor, across your hands, across the faces of the people beside you. Somewhere ahead there is a low hum of filtration, and the muffled sound of children pressing their noses to glass. The air feels cool after the Atlanta heat outside. You are standing in one of the largest aquariums on Earth, and the water is waiting just around the corner.

The Georgia Aquarium opened its doors in November 2005. It was a gift to the city in a very real sense. Bernie Marcus, one of the co-founders of the home improvement chain Home Depot, provided the core funding. He gave a donation of about 250 million dollars to build it. That kind of private generosity is unusual for a project of this size. Many great aquariums rely on years of public money. This one began largely with one family's decision to give something lasting back to their hometown.

The location was chosen with care. The aquarium sits in downtown Atlanta, beside Centennial Olympic Park. That park was created for the 1996 Summer Olympic Games, and the area around it has grown into a cluster of visitor attractions. The World of Coca-Cola stands close by. So does the National Center for Civil and Human Rights. Before the aquarium arrived, much of this ground was underused. Today it forms one of the busiest visitor districts in the city.

Take a moment to remember the building's exterior, if you came in from the street. The curved walls and sweeping lines are often compared to the hull of a ship moving through water. It is a fitting shape. Inside, the aquarium holds more than ten million gallons of fresh and salt water in total. When it opened, it was described as the largest aquarium in the world by water volume. Other giants have been built since then, but it remains one of the biggest anywhere.

The heart of the building is the gallery called Ocean Voyager. This single habitat holds more than six million gallons of salt water on its own. To picture that, imagine several Olympic swimming pools joined together, and then deepened. Ocean Voyager was built for one purpose above all. It gives enough space to the largest fish in the sea... the whale shark. Few aquariums anywhere in the world have ever attempted to keep these animals.

And here is the first surprise for many visitors. The whale shark is a shark, but it is gentle. It does not hunt large prey. Instead, it swims slowly with its wide mouth open, filtering tiny plankton and small fish from the water. Its skin is dark grey, covered with pale spots and stripes. Scientists say that the spot pattern on each animal is unique, a little like a fingerprint. Researchers in the wild use photographs of these spots to identify individual sharks.

As you walk into Ocean Voyager, you pass through a long acrylic tunnel. The water surrounds you on both sides and overhead. Rays glide above you, their pale bellies close enough to study. Groupers drift past. Schools of smaller fish turn together in silver flashes. Then the tunnel opens out to a huge viewing window. It is one of the largest windows of its kind in the world. Many visitors simply sit down on the floor in front of it, and watch.

Watch for the manta rays. Their wingspan can be wider than a person is tall, and they move almost like birds in slow flight. The Georgia Aquarium was one of very few places to display manta rays when they first arrived. Mantas are curious animals with large brains for their size. Divers in the wild often report that mantas seem to watch them back. Here, too, you may feel that the attention runs both ways.

Ocean Voyager is only one part of the story. The building is arranged around a central atrium, with separate galleries branching off like spokes of a wheel. Each gallery carries its own theme. Cold Water Quest brings in animals from chilly seas. Here you may meet beluga whales, the pale white whales of the Arctic. Belugas are sometimes called the canaries of the sea, because of their whistles, clicks, and chirps. Sea otters, penguins, and other cold-water animals share this zone.

Tropical Diver offers a different mood. The water is warm and bright, and a living coral reef fills the main display. Look for small fish darting between coral heads, and for anemones swaying in the current. The colours here are much stronger than in the cold-water halls. River Scout turns to fresh water, with animals from rivers in Africa, Asia, South America, and Georgia itself. Look up as you walk through it. Part of the river flows above your head.

Then there are the presentation spaces. The aquarium has a theatre for bottlenose dolphins, where trainers show how the animals respond to cues and signals. California sea lions have their own stage and habitat too. In 2020, the aquarium opened a gallery devoted to sharks, called Sharks: Predators of the Deep. It focuses on larger hunting species, a clear contrast to the slow, plankton-eating whale sharks you met earlier. Together, the two halls show just how varied sharks can be.

Here is the second surprise. Much of the real work of this aquarium happens out of sight. The staff care for animals, but they also take part in research and conservation projects in the wild. They have studied whale sharks in their natural waters, and supported rescue work for stranded marine animals along the coast of the southeastern United States. The tanks you see are only the visible part. Behind the walls are pumps, filters, laboratories, and animal care areas that most visitors never notice.

Before you leave, come back to the big window one more time. Find a quiet spot and let your eyes slow down. Notice how the light changes as the animals pass in front of it. A whale shark crosses, and the whole room seems to dim. A manta turns, and the blue glow returns. Listen to the hush that falls over the crowd. People of every age go quiet here, often without realising it.

When you walk back out into the Atlanta sun, the city will feel loud again. Traffic, voices, the warm air of the park next door. But carry a little of that blue light with you. Somewhere behind those curved walls, the largest fish in the sea is still turning slow circles in the water. It moves at the same calm pace as before... long after the doors have closed for the night.