It's the only aquarium I can recall where all of the climate zone areas actually share the main tank - only apparent once you get to the lower level and can look up in the corners and see the otters, penguins etc. Apart from a handful of standalone tanks for seahorses, jellies and similar fragile creatures it's one big ecosystem. Reasonable amount of English signage plus various languages available on audio players make it a good international visitor spot. Tickets are ridiculously annoying though - the queue to buy at the box office was enormous, partially because the automated ticket machines only take cash, and only in Euro note denominations of 5, 10, 20. Seriously people - why no credit/debit option? The slots are all present on the machines, just with black duct tape covering them!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.