Little fingers going in and out of hammer

[Jordan518]

Have these tiny little fingers they go in and out of my hammer now I've never owned a hammer before this is my first one and I have no noticed this on my frogspawn now or previous ones owned or my torches or any other coral for that matter

 

[ryanjohn1]

White light pictures

 

[ISpeakForTheSeas]

Yeah, white light pics are generally needed for an ID.

That said, in this case, the second pic seems to have either a feather duster worm or a barnacle:

Feather dusters fan out into a circle rather than a semi-circle/rake-shape like you'll see with barnacles. Feather dusters also have tubes while barnacles have sort of globe/mound-shaped shells they live in. Also, barnacles will make a very distinctive feeding motion where they'll curl their cirri (the feeding appendages you see in your pics) into their holes like a hand curling into a fist.

 

[Jordan518]

This looks more clear