Poisonous snail?

Don! Thanks a lot for the ID!! you don't know how much I appreciate it, I spent hours trying to Id this one. I will do a lot of research on this guy because letting him starve is not an option. Do you know what should I try to do to feed him? If not, I don't really know what to do with him. I would love to give him in addoption, but I live in Mexico and finding someone who knows what he's doing is not always easy. Thanks a lot for your time and help.

 

I've made my choice. I'm returning the snail to the spot I collected him from. Apparently, he's likely to die of starvation as it is an urchin and sea star eater. It's a shame, he's beautiful.