on melevsreef its called a peppermint snail and its reef safe but I'm not sure I want to take a chance here is the picture of them that I took. Looking for a positive ID. thanks keith
Without the proper photos (up close and showing the details of its underside), it would be hard to say what they are, although as is, I am guessing a cowry species. I have some examples and more links if you care to look.