I've been scuba diving for almost 2 decades and it really pisses me off seeing divers do this stuff. If you touch coral you kill it wherever you touched it, period. If you touch a whale shark you rub off a mucous covering that protects it from infection. If you touch an eel you can easily lose a finger because their vision is garbage and they don't know what you are. There are tons of examples like this, without even going into the stuff that if you touch it it is going to HURT YOU. It's just a bad idea to touch anything in the ocean that's alive. And these videos encourage new divers that don't know any better.