October 20, 2011 
While snorkeling on the Ewa side of the MLCD, in the waters inside the groin (not the outer reef) I spotted this odd looking organism living/growing in a Cauliflower coral. I have never seen anything like this before, so if you have any ideas, please comment! 🙂
Reef Watch Waikīkī 
I can’t tell from the photo if it’s mobile or not, but could it be kahe crab holes?
Hi Judith, that is a very good guess! The crab holes look different though. They are inside the coral rather than attached to the surface. Here’s our post on it: https://reefwatch.wordpress.com/2011/02/04/what-are-those-holes-on-the-cauliflower-coral/
Some of my friends think these are galls from crabs or shrimp.