Clam killing bristol worms!!!!

[michika]

In my experience, and I've had A LOT of clams, worms come to feast when clams are dead or dying. Putting clams on bases can help, but if your clam doesn't want to stay put, its the way it goes.

It was a very pretty clam, and looked rather healthy from your photo. Although Whatcaneyedo's photo looks like Pinched Mantle, or its just in an awkward state of retraction/extension, which is different.