Anenome

[Delphinus]

Without experience with racoons myself, my guess would be that your guess is pretty bang on. Butterfly's (at least some species) are supposedly potential predators of anemones. The anemone with the clown pair is apparently being protected or the butterfly just knows not to try that one because of the clowns being there.

The leather, I have no idea. It could be the butterfly.

The real proof in the pudding would be getting the racoon out of there and seeing how things do after that. Maybe the thing to do is try a fish trap before tearing apart your rockwork though.