unknown egg cluster on SA reef..?

I went for a snorkel on Port Noarlunga reef yesterday (just South of Adelaide) and tooks some nice photos in the ambient light. One of the subjects I wasn't familiar with, I'm guessing it's eggs of some kind?

Check out the pic in my Panasonic LumixLife gallery, and see what you can make of it... it's the white ball-shaped subject, stuck to the reef wall. The cluster of 'eggs' was small, maybe 15-20cm in diameter for the cluster.

Here's the link: http://bit.ly/3DI6b

..and if you like what you see, click on the 'tick' in the bottom left... it sends me your vote for a 'peoples choice' accolade ;)

Contributed by danimations added 2009-09-11