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.
they are pineapple sponges. i have them all over my sump but not in my display tank. some fish like to eat them but i'm not sure which ones. they are harmless filter feeders. they pull nutrients out of the water. i wouldn't worry about it.