Blue spot on liverock?

[Tangoforce96]

Hi, anyone know what this is? searched everywhere on Google but saw nothing similar, there's 2 of them.

 

[Spare time]

Fairly sure that is a discosoma mushroom

 

[Gtinnel]

Fairly sure that is a discosoma mushroom

That's what it looks like to me also

 

[Soren]

+1 blue mushroom

 

[Tangoforce96]

Fairly sure that is a discosoma mushroom

Ah pretty cool thanks, not got a light installed yet so can't imagine it lasting too long.