Olive Snail ?

[SteveMM62Reef]

I kept seeing Olive Snails at PetCo, and avoided them due to the Predatory Nature of them. I saw them in a Reputable LFS, so are some not Predatory. Matching Picture copied off of the Internet

 

[ISpeakForTheSeas]

To my knowledge, all of them are predatory (like with other kinds of snails, there may be a random oddball exception or two, but I certainly wouldn't expect it).

The snail pictured appears to be the Lettered Olive Snail, Oliva sayana, which reportedly feeds on bivalves (clams, oysters, mussels, etc.), pods/small crustaceans, and worms.

Edit: And detritus/dead animals of other varieties too.