This closeup of a curious little critter clearly shows the snout and foot of the conch, two of the things that make it very interesting.
The snout makes it a great cleaner, taking up detritus from the sandbed like a little vaccuum cleaner. The foot helps it to burrow in the sand, as it often does, and also can shoot this little mollusc quickly to another spot when it feels threatened. This "jumping" behavior is what gave them the "fighting" part of their nickname, as they are actually peaceful scavengers that will not harm things in the reef. It does also have a hidden spine, but this is used only in defense; it has not bothered any of the inquisitive fish in my tank.