tiny feather dusters? ID

[snowlynx]

what are these, the purple looking strands, they are actually clear looking,
like grim reaper hand, fingers, that pop in and out of the tubes, 2 hitch hikers
in this case.

threat or safe?

thanks

 

[Maggie321]

It's some sort of a tube worm I think. I had one in the middle of a trumpet coral and for the longest time I thought it was a part of the corals anatomy.

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[snowlynx]

lol, I thought it was part of the coral too

I have a feather duster but it does not constantly pop in and our like these
very tiny though

 

[mcgyvr]

barnacles.. harmless filter feeder

 

[ca1ore]

Not entirely sure what to be looking at. If it's popping in and out and 'scooping' at the water, yes, barnacle. I see what looks like small bristle stars as well.

 

[snowlynx]

Not entirely sure what to be looking at. If it's popping in and out and 'scooping' at the water, yes, barnacle. I see what looks like small bristle stars as well.

you got some eagle eyes there if you can make out a star in my photo

I saw a star last night on the glass, asterina or brittle, I don't know which but
I tossed it out to be safe