help what is this
 

i found this growing on a dead peice of coral got bout 4 of them
Attachment 5058

Do you know what the dead coral was? It almost looks like a Duncan.

+1 on the ducan coral. Maybe there was a bit of tissue left and it regenerated itself.

ya dont know what the dead peice was .looks like a branching coral hammer or frog it came out of a sump

[IMG]http://i171.photobucket.com/albums/u...h/DSC_0005.jpg[/IMG]

I still say Duncan. Here's a pic of one from the net that reminds me of what you have. It's not my pic, my Duncan is too tiny to show any branching yet.
http://www.westendtrains.com/aquarium/Duncan2.JPG

The "rock" that it came out of looks like it is a skeleton of a duncan coral - compare it to the pic - the sttucture matches closely, and would explain why little duncan corals are growing out of it.

yep it looks like it thanks :biggrin: