As much as this makes me smile, it makes me sad...
These obviously intelligent and amazing creatures are still trapped in that tank, and I have to wonder if it is out of sheer frustration and boredom
that they developed this to entertain themselves.
Surely an intelligence so defined would know what it is to be 'trapped' no matter how realistic the place is made to look.
And seeing this after having done a lot of reading about marine animals including dolphins killed in drift net fishing recently, breaks my heart...