Zoa's spawning

[Temp]

I am new to reefing and I was wondering if anyone knows what the transparent looking coral is in the picture. It looks like vines are throughout my live rock. I was wondering if it's the zoa spawning.

 

[SandJ]

There is a feather duster on the rock in the bottom center of the photo.

 

[Reefapprentice]

Feather duster, a filter feeder invertebrate. It's rare for any type of coral to spawn in captivity as certain moon lighting, temperature , and chemical changes need to take place in the water.

 

[Temp]

So the feather duster could of been on the live rock when I purchased it?

 

[Reefapprentice]

Very likely,some species reproduce and show up everywhere including glass.

 

[Temp]

Ok. Are they good or bad? Just let them go?

 

[RJinPV]

They are harmless