OK so the top picture. i was looking in the tank a night with a flashlight for my emrald crab to see what he was up to. and i saw this snail next to my zoafrag! what is it?
and the next two pictures same day before work i saw this on the glass? kinda looks like a slug or somin.
and another question i had a small black looking urchin slug. that had pointy spines running in one direction on it kinda like a porcupine! i have seen every once and a while to always near my zoas? what are theese things?