Fluorescent Orange Spot on Rock

[ChrisKSB]

It is very vibrant and pretty - any idea what it is? Picture doesn't really show how electric it looks...

 

[GK3]

It is very vibrant and pretty - any idea what it is? Picture doesn't really show how electric it looks...

Did you remove something recently? Kind of looks like what happens when you chip off Carolina algae.

 

[ChrisKSB]

Nothing removed...still just starting to grow coraline around the tank. No coral... Not concerned, just trying to learn as I go...

 

[jdsmith0524]

Did you find out that's an Orange Honeycomb sponge?