Overall the aquarium is very cool with one of the biggest and most expansive penguin exhibits we have ever seen. We went on a Sunday and got there first thing so it was quiet but by lunch it was a madhouse where you spent as much time dodging strollers as you did looking at exhibits.
The main reason for our visit was my 12 year old daughter participated in the Trainer for A Morning Program. For 2.5 hours she and another girl (max size of 3 people) trailed a trainer everywhere they went and got to participate in food prep, feeding different animals and participated in 3 different training sessions with the harbor and fur seals. She got to go into the seal enclosures and touch and interact with the seals - and even got a painting done by a Harbor Seal right in front of her.
We spent 15 days in New England and this was one of our favorite things and my daughter absolutely loved the Trainer Program.