Compared to other aquariums I saw in Europe and Brazil, this is one of the smallest. No fancy large aquariums where you walk in a tunnel through the fish, and no huge sharks. But there are quite large sharks and rays, and generally a nice variety of fish. I am not the best judge, but everything seemed well maintained, although I wondered why the big turtle was swimming in an empty tank without any plants. The sea lions department was just being cleaned, which was a pity. I understood that this was one of the first aquariums to use water fresh from the sea.