Which aquarium is best depends on what you want to see

There is no single "best" aquarium in the United States because the largest and most visited ones each specialize in different marine environments and species. The Georgia Aquarium in Atlanta holds the most total water volume and the most visitors annually. The Monterey Bay Aquarium in California is known for its kelp forest and deep-sea exhibits. The National Aquarium in Baltimore focuses on freshwater and saltwater ecosystems with an emphasis on conservation. The Shedd Aquarium in Chicago sits on Lake Michigan and features dolphins and beluga whales. Your choice depends on whether you want to see specific animals, prefer a particular region, or are interested in particular ocean habitats.

Each major aquarium requires different travel time and has different admission costs. Some are better for young children, others for teenagers interested in marine biology, and some for visitors who want to spend a full day exploring. This guide describes the largest and most visited aquariums, what makes each one distinct, and how to decide which fits your trip.

Key Takeaways

  • The Georgia Aquarium in Atlanta is the largest by water volume and annual visitors, with whale sharks and beluga whales as main attractions.
  • The Monterey Bay Aquarium in California is best for seeing kelp forests, sea otters, and deep-sea creatures in a naturalistic setting.
  • The National Aquarium in Baltimore emphasizes conservation and has the most diverse freshwater exhibits alongside ocean habitats.
  • The Shedd Aquarium in Chicago offers marine mammals including dolphins and belugas, plus interactive touch pools for younger visitors.
  • Regional aquariums in Florida, Texas, and other states offer lower admission costs and shorter lines than the major national destinations.

Georgia Aquarium: Largest by volume and attendance

The Georgia Aquarium in Atlanta holds 11 million gallons of water and draws over 10 million visitors per year. Its main draw is the whale shark exhibit — the aquarium houses multiple whale sharks, the largest fish species in the world, in a tank called the Beluga and Whale Shark Pavilion. The facility also keeps beluga whales, manta rays, and thousands of other fish species across multiple galleries. The building itself is massive and can take four to six hours to walk through completely.

Admission typically costs between $30 and $45 for adults depending on the season, with discounts for children and seniors. The aquarium is located downtown and is accessible by car or public transit. Parking on-site costs extra. Peak times are summer months and school holidays, when lines can be long and the facility becomes crowded. Visiting on a weekday in fall or spring usually means shorter waits.

Monterey Bay Aquarium: Best for kelp forest and deep-sea exhibits

The Monterey Bay Aquarium in Monterey, California, is built on the edge of the Pacific Ocean and draws water directly from Monterey Bay. This location allows it to display living kelp forests — tall underwater plants that sway in the current — alongside the animals that live in them, including sea otters, sea urchins, and rockfish. The aquarium also has a deep-sea exhibit showing creatures from the ocean floor, including jellyfish and anglerfish that are rarely seen alive in captivity.

Admission costs between $35 and $50 for adults. The facility is smaller than Georgia Aquarium but is considered by many visitors to have the highest quality exhibits because the animals are displayed in conditions closer to their natural habitat. The town of Monterey is a tourist destination with hotels, restaurants, and other attractions nearby. The drive from San Francisco is about two hours. Summer is peak season and the facility can reach capacity, which means entry is limited and you may need to arrive early or purchase timed tickets in advance.

National Aquarium: Strongest freshwater and conservation focus

The National Aquarium in Baltimore, Maryland, has the most extensive freshwater exhibits of any major U.S. aquarium, with galleries dedicated to rivers, wetlands, and rainforest ecosystems. It also maintains saltwater exhibits including a coral reef and open ocean tank. The facility emphasizes conservation and research, and many of its programs teach visitors about threats to marine and freshwater animals. The aquarium is located in the Inner Harbor, a waterfront district with restaurants, shops, and other museums.

Admission costs between $30 and $40 for adults. The facility is medium-sized compared to Georgia Aquarium and can be explored in three to four hours. The National Aquarium is less crowded than Georgia Aquarium on most days, making it a better choice if you prefer a quieter experience. The building itself is architecturally distinctive and worth visiting for that reason alone. Parking is available in nearby garages but costs extra.

Shedd Aquarium: Marine mammals and interactive exhibits

The Shedd Aquarium in Chicago, Illinois, is located on the shore of Lake Michigan and is known for its marine mammal shows featuring dolphins and beluga whales. The facility has touch pools where visitors can handle starfish and sea anemones, making it especially popular with families with young children. The aquarium also has a large saltwater tank with sharks and rays, and freshwater exhibits featuring fish from the Amazon and other rivers.

Admission costs between $30 and $40 for adults, though prices vary by season and day of the week. The facility is accessible by car or public transit and is located near other Chicago attractions including the Field Museum and Museum of Science and Industry. Summer is peak season. The Shedd is one of the oldest major aquariums in the country and has been operating since 1930, so some exhibits feel dated compared to newer facilities, but the marine mammal programs remain popular.

Regional aquariums: Lower cost and shorter lines

If you live in or are visiting Florida, Texas, or other coastal states, regional aquariums often cost less and have shorter lines than the major national destinations. The Florida Aquarium in Tampa costs around $25 to $30 for adults and focuses on Florida's native fish and marine life. The Texas State Aquarium in Corpus Christi costs around $20 to $25 and emphasizes the Gulf of Mexico ecosystem. The Aquarium of the Pacific in Long Beach, California, costs around $30 to $35 and is smaller than Monterey Bay but still offers quality exhibits.

These regional facilities are good choices if you want to see marine life without traveling far or spending as much money. They are also less crowded than the major national aquariums, which means you can move through exhibits at your own pace and spend time observing animals without fighting through crowds. Many regional aquariums also have special programs like behind-the-scenes tours or feeding demonstrations that are worth checking for before you visit.

How to choose based on what you want to see

If you want to see whale sharks and the largest variety of animals in one place, choose Georgia Aquarium. If you are interested in how animals live in their natural habitat and want to see kelp forests and deep-sea creatures, choose Monterey Bay Aquarium. If you want freshwater exhibits and conservation education, choose National Aquarium. If you have young children and want interactive touch pools and marine mammal shows, choose Shedd Aquarium.

Consider travel time and cost when making your decision. Georgia Aquarium and Shedd Aquarium are in major cities with good public transit and hotels. Monterey Bay Aquarium requires a drive to a smaller coastal town. National Aquarium is in Baltimore, which is on the East Coast and accessible by car or train from the Northeast. If you live in the South or Midwest, Georgia Aquarium or Shedd Aquarium will be closer. If you live on the West Coast, Monterey Bay Aquarium is the best choice.

Frequently Asked Questions

How long does it take to see everything at a major aquarium?

Georgia Aquarium takes four to six hours to walk through completely. Monterey Bay Aquarium takes three to four hours. National Aquarium takes three to four hours. Shedd Aquarium takes three to four hours. Most visitors spend two to three hours and skip some exhibits. Plan for at least three hours if you want to see the main attractions without rushing.

Which aquarium is best for toddlers and young children?

Shedd Aquarium is the best choice for young children because it has touch pools where kids can handle starfish and sea anemones, and the marine mammal shows are engaging for short attention spans. Georgia Aquarium is also good for children but is very large and can be overwhelming. Monterey Bay Aquarium is better for older children and teenagers interested in marine biology.

Do I need to buy tickets in advance or can I buy them at the door?

During peak season (summer and school holidays), buying tickets in advance online is recommended because the aquariums can reach capacity and entry may be limited. During off-peak times (fall and spring weekdays), you can usually buy tickets at the door. Check the aquarium's website before you visit to see current wait times and whether timed entry is required.

Which aquarium has the best gift shop and food options?

All major aquariums have gift shops and food courts. Georgia Aquarium and Shedd Aquarium have the most extensive food options because they are larger. Monterey Bay Aquarium has fewer food choices inside the building, but the town of Monterey has many restaurants nearby. National Aquarium is located in Baltimore's Inner Harbor, which has restaurants within walking distance.

Are there discounts for military, seniors, or students?

All major aquariums offer discounts for military members, seniors (usually age 65 and up), and students with a valid ID. Discounts typically range from $5 to $10 off admission. Children under age 3 are usually free. Check the aquarium's website for current discount rates and any special promotions before you visit.