It's probably alright if you've never seen nothing...

It's probably alright if you've never seen nothing like this before, otherwise it's just another aquarium. Absolutely nothing special if only the "underwater" experience. Price wise seems overpriced for what it is. Make sure you buy your tickets online to avoid the que and save a little bit.
If I knew what it was I wouldn't go.
Saying this it's quite busy so people must be finding something in it.