What to know about the Barcelona Aquarium, deep in Port Vell
The sound of harbor waves echoes overhead. Beneath your feet, a moving walkway glides silently through 80 meters (262 feet) of transparent tunnel. All around you, above and to the sides, gray sharks cross paths with giant stingrays in a perpetual underwater ballet. Welcome to the Barcelona Aquarium, the largest Mediterranean-themed aquarium in the world.
Why visit the Barcelona Aquarium?
Opened in 1995 in the heart of the old port, this facility has become a European benchmark. Its 35 tanks house 11,000 marine creatures representing 450 different species. What truly sets it apart is its dedication to the Mediterranean Sea. Nowhere else will you find such a comprehensive collection of fauna from this ancient body of water.
The Oceanarium is the beating heart of the facility. This giant tank measures 36 meters (118 feet) in diameter and holds nearly 4 million liters (over 1 million gallons) of seawater. Sand tiger sharks, stingrays, sunfish, and moray eels coexist here in a carefully recreated ecosystem.
The underwater tunnel for total immersion
The 80-meter (262-foot) tunnel runs through the entire length of the Oceanarium. On the moving walkway, time seems to stop. Overhead, a gray shark glides with surprising grace. A giant stingray undulates slowly, revealing its white underside. Children press their faces against the glass, mesmerized by the hypnotic display.
Halfway through the tunnel, do not miss the enclosure for Mediterranean octopuses. These intelligent invertebrates watch visitors with as much curiosity as you watch them. Their ability to change color and texture in seconds remains one of nature's great mysteries.
Marine ecosystems from around the globe
Mediterranean aquariums
Thirteen tanks recreate specific Mediterranean habitats, such as the Illes Medes (Medes Islands), the Ebro Delta, and the underwater caves of the Costa Brava. Posidonia seagrass sways in the artificial currents. Sea bream swim in tight schools. Dusky groupers, the masters of the rocky depths, watch their territory with a vigilant eye.
Tropical waters
Seven tropical aquariums explode with color. Coral reefs from Australia's Great Barrier Reef sit alongside Pacific atolls. Butterflyfish, surgeonfish, and zebra moray eels fill these tanks where biodiversity reigns supreme.
Planeta Aqua and Explora! for hands-on learning
On the first floor, Planeta Aqua explores the extraordinary adaptations of marine life. How do creatures survive in the frozen abyss? How do bioluminescent animals produce their own light? Interactive screens, tactile games, and immersive installations answer these questions in a fun way.
The Explora! area is designed specifically for younger visitors. Fifty interactive installations allow them to touch, listen, and observe. An open tank features stingrays that you can brush with your fingertips. You can see the wonder in the children's eyes.
Pro tip: Schedule your visit for 11:30 AM or 4:30 PM to catch the daily feeding of the Humboldt penguins. These seabirds, originally from Peru, put on a hilarious show when keepers toss them their daily fish. Arrive five minutes early to snag a good spot near the glass.
Practical information for your visit
The average visit lasts between 1 hour 30 minutes and 2 hours, but enthusiasts can easily spend half a day here. An on-site cafe-restaurant is available for a break. The gift shop, located at the end of the route, offers a great selection of books on marine life.
The aquarium is fully accessible to visitors with reduced mobility. Explanatory texts are provided in Catalan, Spanish, English, and French. Audio guides enhance the experience with commentary from marine biologists who specialize in the Mediterranean.
Opening hours
- 10:00 AM to 7:00 PM in the low season
- 10:00 AM to 8:00 PM in spring and autumn
- 10:00 AM to 9:00 PM in summer
*Information subject to change
The Barcelona Aquarium, ideally located by the sea, is a great place to visit for families. It was renovated for its 30th anniversary in 2025 to integrate more immersive and interactive technologies and to communicate more about marine conservation. You can find over 11,000 marine organisms there, including the big stars for kids, sharks and clownfish. For couples or groups of friends, I would recommend enjoying the Barrio Gotico or the Sagrada Familia in Barcelona instead.