Help on identifying coral or parasite?

[Raul]

I just got into a nano reef, no experience with marine, I been cycling my tank with live rock and carib sea arglive and also dosing some ammonia, everything looks good, salinity 1.025.

when I got the live rock I got like what it appear some sort of polyp death coral arrangement, well that is what I can tell, and it seems it has some sort of growth or parasite on it but I am not sure, but what I can tell it looks like a plant and if I knock the glass or turn lights it hides very fast so I know it is live.


here is a pic is

it is what is is in between that looks like a plant or not sure of the white death coral.

http://i1072.photobucket.com/albums/w376/raullozano3/0d5319af.jpg

[nacra99]

Thats a little feather duster... harmless.

[Raul]

Thats a little feather duster... harmless.

thanks.

[rage]

Hmm, I don't see a feather duster in that picture.
Looks like some dead sponge to me.

[Raul]

it is there, is is in the middle, I know it is alive becasue evertime i hit the glass it hides.

[ometh]

Yep small dusters. Fun to watch them catch food