Don't be so stunned. You have two foot pictures, and a photo showing a side view of part of the shell. There are very few snails that can be identified by looking at the bottom of the foot (like, none) and a person would have to be really familiar with your snail to recognize it from a partial side view. All that said, it looks like a muricid, which should eat other snails and clams.
Cheers,
Don