The Black Marble !

[Yasser]

Good day everyone,
I have just noticed this "thing" below my favia.."see image", I'm sure that it was not there before.. it's a shinny black sphere, about 10mm in diameter, it has not moved since I noticed it.
Any ideas ? is it an egg of something "must be pretty big thing".
I did not want to remove it before I get some ideas.
Any help is appreciated.

 

[sw_addicted]

looks like bubble algae, don't pop it. hopefuly someone else can id it.

 

[kospaintball]

yea that is bubble algae... you could try gettin an emeral crab to eat it.

 

[cioutlaw]

I would carefully try to dislodge it without busting it.