Can someone tell me what these are?

[Ogitrev]

I found out about a LFS that's on my way home from work, so I stopped in last night to check them out. I saw a finger leather I was thinking about getting, then noticed these parasites all over it... and all over all the other corals in the tank. So I refrained from any purchases. But can some tell me what these are? I took this pic with my iPhone.

Thanks!
::Tommy

[sporto0]

Those are flatworms, not particulary harmful but still considered a nuisance. Those can be eradicated by dipping the coral before placing in the display.