Visited on weekday in early April. There were some...

Visited on weekday in early April. There were some school children around, but it wasn't that busy.
We took a small child who enjoyed the sensory nature of the exhibitions and loved staring at the fish. The whole place can be accessed without using steps if necessary.
The aquarium is set-up well to look into the large tank from many vantage points and everything had an English translation.
We went to one demonstration which was the feeding of sea lions and that was very entertaining.
The main cafe was under renovation when we visited so we went to one of the other cafes. The food here was not great, I had a microwaved cheeseburger. So recommendation would be to find alternative food at lunchtime.