The aquarium is 3rd biggest one in the world (#2 is Dubai and #1 is Atlanta), and the only one with 3 whale sharks, and the Expo Park it's in has plenty of other things to see.

Since we had left early, we entered the aquarium right after 08:30 on a monday morning when it opened, so thankfully we avoided the crazy crowds that can be there.

The outside flower statues were fantastic:

There are many displays on fish obviously, but the main attraction is the huge whale shark tank (below):

giant lobsters, too much to eat for a single person on these :)

The Aquarium is of course known for its 3 whale sharks (which are actually sharks, not whales). It's the only place in the world where you can see 3 of them, especially of that size. They may actually have the biggest habitat of any aquarium:

The rest of the aquarium was also good:

very deep sea

The rest of the Ocean Expo Park was good, although the dolphin show was maybe not Sea World level :)

flying dolphins :)

Manatees

Prostetic tail for an injured dolphin

After the aquarium (which is actually worth 3-4H if you include some of the movies they show), we went to see the rest of the expo park, which had an okinawa village recreation and a very nice botanical garden:

And after over 6H in the park, it was time to head back. We could have spent a bit more, but we got a good overview. Maybe we'll be back one day.