Ellen,
Chances are those are Lithophaga, which you can find in Florida and the
Caribbean.
David Kirsh
> From: Ellen Bulger <[log in to unmask]>
> Reply-To: Conchologists of America List <[log in to unmask]>
> Date: Sun, 8 Jun 2003 06:53:54 -0700
> To: [log in to unmask]
> Subject: Re: Boring
>
> What is making the holes, nay, tunnels in the shells of panamic cones I
> found in San Carlos? There appears to be something still in the holes,
> something that looks like a small bivalve or gooseneck barnacle. Are
> these shipworms? I haven't seen anything like this in shells from the
> Bahamas or Hawaii.