I have an image that shows a hand of a well known dive guide firmly gripping / peeling back a seafan to give a photographer ( also well known ) a better shot of a pygmy seahorse.
I thought it was a little extreme but accepted the guide was well experienced and something of an expert on the subject matter that was being peeled and folded into cooperation.
I also observed that the fan appeared to be no worse the wear for the experience and that the pygmy was so happy to see the next photographer he posed and modeled just like before.
m 2 cents