Does anyone know what this is?

[jack123]

My tank has been up for about a half month and I a starting to see some hitch-hikers can a anyone identify this (the little white thing on the algae)?

 

[peasofme]

can't tell from the pic

 

[cloak]

I can't really make out anything either, but perhaps this link will help.

http://www.lionfishlair.com/hitchhiker/hitchhiker.shtml

 

[Bluemon]

Willing to say it's a growth point on the algae. Halimeda are calcerous algae with white growth points

 

[Calappidae]

To me it looks like a white anem pom pom crabs hold.. I have had anems hitchhiking on rock (mine looked like a red single lonely zoanthid moving around) still hard to tell from the picture.. for me the pic is tilted..

 

[RileyLAFD]

hydroid? sponge? and maybe a small nem...?