Very cool Senko. Your post reminds me of a pet turtle I had quite a few years back that had moss all over his shell. Kept him in a swimming pool in the back all summer and trained him to eat night crawlers from my hand. Would come swimming over as fast as he could whenever I walked back. I let him go in a little pond nearby late that summer/fall so he could get ready to hibernate over the winter. I was out at that same pond catching minnows the following summer and a little painted turtle with moss on his back came swimming up. I'm positive it was the same one. Any time I was at that pond that summer he would swim up and have a few minnows from my hand.