Please ID this looks like snowflakes

[JellyBean41]

Kind of camouflage in the rock...

 

[whippetguy]

Snowflake clavularia



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[theplantman]

+1 to snowflakes

 

[JellyBean41]

Spread fast? Take over the rock?

 

[whippetguy]

yes, I have the blue form of it all over my tank. At least it's pretty.

 

[JoeCanada11]

It's a good looking hitchhiker that's for sure.