Small, but cozy
It's not such a big aquarium, but it's very entertaining and can be visited in about 1h 30m, I really liked that they've thought about children, as there are areas where you can reach into aquariums and play with starfish. It also has open areas where to we can see seals and otters. It has it's gift shop, and a cafe for refreshments. If you buy the CityPass, you have a 15% discount in the museum shop (you have a coupon in the CityPass).