Just curious Bob, you have actually witnessed a bristleworm boring through a live, healthy clam shell ? I personally have not, so I am just trying to draw a conclusion of myth or fact. The point of my post was to see reactions such as yours, where folks read one post and go holy **** I need to get these worms out NOW! Such as Dave did with an immediate reaction to your post. The more I read through forums you can almost watch the fear in people from one single post, whether it is true or not. I'm not a marine biologist, but have been around bristleworms for 30 years and can honestly say I have never seen them kill a clam, so either I'm lucky or others are very unlucky. If you do a search on bristleworms with clams, you get such a wide range of answers. Most lead back to the fact that the clam may have not been healthy to begin with and the opportunistic worms finished off a dying specimen.
I mean no offense whatsoever! I just wanted to see if anyone had personal, (with their own eyes) proof of a negative impact on a reef tank. Just like any opportunistic organism on this planet, I'm sure if they were hungry enough, a clam resting in sand could become lunch. But at the end of the day, I'd fear crypto or coral munching nudi's before I would a bristleworm. Just my 2 cents though!