Dec 28, 2011 #1 Ericbrooks Aquarium Advice Apprentice Joined Oct 2, 2011 Messages 19 Little thing moves around looks like drink umbrella Attachments image-3735671766.jpg 69 KB · Views: 68
Dec 28, 2011 #2 austinsdad Aquarium Advice Addict Joined Mar 31, 2004 Messages 7,694 Location Accokeek, Maryland Limpet I believe. A kind of snail. FantasyReef Databases-Viewing item "Keyhole limpet"
Dec 28, 2011 #3 crister13 Aquarium Advice Addict Joined Aug 2, 2011 Messages 3,473 Location Princeton, NJ Definitely a limpet. I have them and theyre beneficial eating algae.