ditto, you can get stung, Ihave many times. I have a green carpet for about 2 yrs now ,the few times ihad to handle him, I touched him on the base and did not get stung, the green part is very sticky, I have been cleaning my tank and gotten stuck to him and pulled away too hard and riped the top layer of skin off, you have to be careful cause you can ripe their tenticles off this way also.