Okay can anyone tell me what this is? For some reason these strange things invited my Axolotl tank and are every where. They don't seem to move, they just stay there. I've had snails in this tank before, but I'm not sure they are snails. Though they kind of resemble snail. I've picked don't out of my tank and took a look but I'm baffled. WHAT IS IT! it doesn't seem to hurt my little guys. But its kinda an eye sore.