Barcelona Aquarium Moll d’Espanya del Port Vell Barcelona Barcelona Aquarium is the place to go if you are interested in finding out about life in the Mediterranean Sea as it is home to the largest Mediterranean collection in Europe. The complex has 35 aquariums and an oceanarium with an 80m transparent tunnel which enables you to walk through it as if on the sea bed. Some 11,000 fish and more than 450 different species of plants live in the aquarium. It is a great place to take children and makes learning about the sea fun. There are also opportunities to swim with sharks if you have a diving qualification. Back to Barcelona for Children Leave a Reply Cancel Reply Your email address will not be published.CommentName* Email* Website Save my name, email, and website in this browser for the next time I comment.