Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
The color on that is still off. Looks like too much of the red spectrum was taken out hence the surreal green coloration). Look at the color of the rock in that picture. My guess is that those light gray splotches are coraline.
AquaticObsessions had a nice little hunk of those there the last time I was in, but that was a while ago.