Is this a Flatworm?

[Reefman150]

Hi, we seem to have imported some of these with some mushrooms. Can someone identify it and tell me if these are the dreaded one spot flatworms that harm corals? The pics were taken at 60X with a Intel QX3 microscope so I couldn't get the whole critter in one shot. It also seems the larger they are, the more red they are.

 

[danmhippo]

Well, they are flatworm alright, but I am not sure if they are the one's you are concerned about.

 

[danmhippo]

Nice macro shot, BTW.