The Barcelona Aquarium is located in Port Vell, the city’s old harbor area, and is the world's most important marine leisure and education center dedicated to Mediterranean undersea life. Book your priority access ticket for this unique attraction that has already been visited by more than 14 million people. The aquarium is the perfect place to learn about the seabed and the many species that live there. See the 35 Mediterranean and tropical tanks that are home to 11,000 animals from some 450 different species. Most spectacular of all is the immense Oceanarium, 5 meters deep and 36 meters in diameter. A transparent 80-meter-long tunnel runs through the Oceanarium, making it possible for you to walk among sharks, gilt heads, morays, ocean sunfish, and many other species. With your ticket you'll also be able to visit the permanent exhibitions, Planeta Aqua and Explora! that show the importance of water in the development of the planet, and where kids can discover the underwater world, using all of their 5 senses. After your visit, you'll be able to enjoy the different services on offer, such as the café, shop, and others.