Cone Snail?

[Drock169]

I think its that you've only seen Nassarius distortus and Vibex. There are other types, can't think of the scientific name of it, but there is also the orange spot turbo nassarius and i'm sure that type. Its more than just the shell you have to observe, its the actual animal. It you were going by the shell, then some conchs would look like cone snails, i.e. orange lip conch.