Danny had his hand in the tank and realized the water felt too warm, he wasn't shocked and didn't feel any tingle. We had that happen in our big ray pond before and you could feel a little tingle when you touched the water. Both of her "paws" have the little white dots on it. The only wound is the one near her tail, yesterday it was a dark spot, today it started to grey and frey a little. It could have possibly been damage on the bottom first, but only in the last couple days because she was up swimming in the current Friday evening as usual and there was no damage.