ID Help

[vid151]

trying to figure out what this is ..... looks to be maybe a sponge, or close growing shroom?

any thoughts?

thanks

this is the clearest pic I can get
a new development is the upright growths on this ... it was just a brown spot on the rock till recently.

 

[MICHEAL1]

It is Green Pavona. Here is a link with a picture of it.

http://www.marinecenter.com/media/photos/57C596C4597546C8A8D5E0D8FE2EC64DE.jpg

Mike