Need help to i.d

[jfvella]

I have 2 things in my tank that I've tried searching for awhile and cannot determine what they are. I have live sand and crush coral mix about 3-4 inch deep and I'm seeing a lot of little "worms" that have a head which looks like a nem.I know all about the beneficial scavengers and the bad guys but have never seen or heard of anything that looks like it. Only the head and tenticles are protruding from the sand and some in crevices on my rock. Not very big about 1 inch long max and biggest diameter head is the size of a dime. Is it some type of nem?I'm 100% sure its not aptasia There are a lot of them No issues with them and everything in the tank is fine atm just mainly for my curiosity lol. Also I noticed some weird purple sacs with orange fluorescent dots on it. Seems to be getting slowly bigger. Is this some odd form of bubble algae or something else? Please view the pics and tell me what ya think.Any insight from experience would be great.

 

[Calappidae]

I think its a feather duster worm. Harmless

 

[jfvella]

Naw definitely not a feather duster, the tentacles are more of a solid fleshy type rather then hair like of feather dusters.

 

[Calappidae]

Naw definitely not a feather duster, the tentacles are more of a solid fleshy type rather then hair like of feather dusters.

try to scare it and see if it will retract.

Other wise see if you can find something here: http://www.chucksaddiction.com/hitchhikers.html

 

[jfvella]

If I put a light right in its face it will slowly retract. Yet at times the light does nothing lol. I didn't see anything similar in the worm section of that article but I will comb through more. Thanks. It honestly looks like a tiny anemone in a soft tube with pinkish and white(almost transparent) on its tentacles. Weird .I'll see if I can find one tonight where the body is visible

 

[jfvella]

Got a better pic. And after looking over that site I assume it could be nynantheae anemones. Any thoughts