This was an awesome find! I’ve never found anything like this before. Found burrowed under a rock in the mud on the water’s edge. The body is completely waterproof which I found very interesting. As shown in the 2nd photo it tried to stick its head under water but the water warped underneath instead of going over the head. It is very heavy but in the 6th and 7th photo it was floating and swimming instead of sinking. It’s body is very oddly water repelling.