Just saw this.
This is why I totally respect Cristina.
This is also why when it comes to those interactions, I do give her a pass: like I've said before, this appears to be completely voluntary insofar as the Sharks appear to actively seek her out for a friendly rub, and this irrespective of any food rewards - and again, no, this is not the dreaded tonic immobility but something else that is totally amazing and intriguing!
By the same token, there are now so many copycats that the once unique and equally amazing posing with vertical Sharks has degraded to a rather gratuitous circus stunt, meaning that it would probably be best to gradually phase it out.
Anyway, this continues to amaze me.