Can anyone ID this

[IronVulture]

 

[ritter6788]

Branching sponge?

http://coralpedia.bio.warwick.ac.uk/en/sponges/ptilocaulis_walpersi

 

[IronVulture]

That's what I was thinking at first. I was at the lfs when it came in and the helper at the store took it totally out of the water and walked it across the store to a different tank. That was 3 weeks ago and it shows no sign of die off.

 

[46gReef]

That's a sweet piece! Very cool.....