The Barcelona Aquarium turned out to be a slightly pricy but exciting. We went there on a rainy day, so it was crowded with people but conditions for the fish were even worse. That is at least what I think, recalling how we used to calculate space per fish when we had a fish tank.
It must have been the heat inside the building that influenced my wife, but she immediately started talking about future holidays on exotic beaches. Going only by the fish in the geographically themed presentations, our next trip would go to the Red Sea, but it is more likely that fish around Cuba will meet her face snorkelling in their waters.
Neither of our children spent much time looking at the rays and small sharks swimming over their heads in the playground area at the end of the tour. Undoubtedly, however, this was the part they liked the best.