Peanut Worm? Can you help Identify

[ParticleMan]

I got this torch a couple week ago and it seems to be pretty happy. I did notice this evening though it seems to have some type of hitchhiker attached to the skeleton. I think it may be a peanut worm? It has a flat circular/oval face and thin stalk that goes directly into the skeleton of the torch. It's very quick to react to movement, light but when it's out it just seems to stay in the water column. When it retracts it can't be seen other than a small dis-coloration in the skeleton. I've attached a couple pictures which are about the best I could get. Can anyone help? Should i glue over the opening? Is it something to be worried about? The last picture is how it generally looks during the day.

 

[EnterName]

The organism circled in the image below could be one large flatworm. Euphyllia eating flatworms can be quite translucent and often have a stripe in the middle just as you can see in the image.

Most flatworms are bad news, so I would give that coral an appropriate dip to make the potential hitchhiker(s) let go of the coral and then quarantine the coral if you can. If those organism(s) lay eggs you will need to repeat that process until all eggs are hatched and you removed all hatchlings before they can reproduce themselves.

I would also double check the red blobs on the coral skeleton. At first I thought these were Waminoa sp. flatworms but the side-view of them lets me doubt that ID a bit... They look still weird, so I would try to get them off during the dip it isn't something encrusting.