Something's snacking on my softies...

Something is making all my softies disappear. Zenia, ricordea, red mushrooms, clove polyps,every soft coral I've added seems to have been eaten! It is not immediate, some have lasted several months before sudden disappearance.
I don't suspect the fish (yellow and hippo tangs, foxface, ocellaris and sebae clowns and PJ cardinals)
There are some smaller gorilla crabs, some fairly big bristleworms and the usual assortment of hermit crabs and snails.
Any thoughts?
Thanks,

 

Reefs.org: Where Reefkeeping Begins on the Internet - Soft corals
TheSea.Org:: Pests - Snails
Flamingo Tongue Snail
WCMC Global Coral Disease Database

 

Thanks for the links!

I have to see if I can't catch that big bristleworm (Fireworm?) I've noticed lurking around and see if the problem stops...

 

an arrow crab will love to snack on that

 

And possibly my skunk shrimp, peppermint shrimp, and other stuff as well.
I have heard they go after Banded shrimp...

 

My large reef hermit crab seems to enjoy bristle worms.. had one come in on a piece of LR and he had that thing pulled outta that rock and torn to pieces in no time!

Evan.