The pool may be deep but as I said above the exhibit is incredibly foggy and almost impossible to see the puffins. They will be getting a new exhibit soon next to where they are now.
@birdsandbats I heard somewhere that they were Atlantic but they could be tufted. I think the sighs said Atlantic so I’ll go with that for now until it can be proven for sure that they are tufted.
@birdsandbats as I have said before, the glass is completely forged up and is impossible to get a photo of the birds. The pool is the only viewable part of the exhibit.