The different pavilions were well-designed and spaced, the different types of birds to do with water (unusual species of duck with furry brown heads, flamingos, pelicans) were a good inclusion, but the underground aquarium while it gave a special feel of being immersed with the aquatic life, did not have large species, only smaller types like leopard sharks. The Genoa Aquarium which I would rate No. 1 is far larger, more ecologically at one with the sea, and had the best coral, colorful and lively, on display. Even Osaka's Kaiyukkan had the giant stingray and an octopus. Oceanographic is less dramatic and spectacular but there were good write-ups in English on related topics eg the Bermuda Triangle and how women are more suited to deep sea diving for pearls (Japan) because of their endurance of lower temperatures - interesting info!
However, the restaurants on the premises did not have attractive food. Signage on elevators to the caverns should be more prominent as I climbed up and down steep stairs before discovering lifts in some obscure corner. Prices are too high, almost 30 euros per adult.