Need help identifying couple critters.

[SpradleBags]

I have an 55 gallon tank that is not yet established... Started a few weeks back. I put 55 lbs of live rock and 60 lbs of live sand. Yesterday I set my lights up and noticed a couple funny looking thins on my live rock. 1 looks like a stringy white tentacle ranging from 1/2 inch to 1 1/2 inches. the other looks like a tiny clear fan with little black spots on its tip. I know that live rock can contain life, but I just want to make sure its nothing harmful before I add a couple fish this weekend. The YouTube video shows the best. Thank you for any help you can give me.

 

[KJ]

Welcome to R2R!!!
Feather Duster
Spionid (tube worm)
Harmless animals nothing to worry about.

 

[SpradleBags]

Awesome thank you so much for the response.... looks like someones getting their first set of fish today!!!! I'm pumped lol .... the guy at my LFS warned me this hobby was more addicting than crack! Apparently its more expensive than crack as well lol

 

[KJ]

YW