- What you can expect - Dive into the world's largest Mediterranean-themed aquarium with these Barcelona Aquarium tickets. Explore 21 aquariums, an oceanarium, and Planeta Aqua, dedicated to the mysteries of our planet. With 11,000 animals from 450 species, it's a journey into the aquatic wonders of tropical seas and coral reefs. Highlights include an 80-meter shark tunnel, an encounter with apex predators, and a fascinating area featuring poisonous tropical fish. - Important Info - Child policy: - Children under 2 years are free of charge, no tickets required.