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paal
05/21/2010, 08:58 AM
These green "buttons" came out of a small LR I have isolated on the sand bed. They are roughly 3-4mm in diameter.
Only have a mobile phone pick, and the rock is 20cm from the glass, so the quality isn't all that good I'm afraid:

http://i770.photobucket.com/albums/xx349/paalrune/DSC00205.jpg

Sugar Magnolia
05/21/2010, 09:26 AM
Acetabularia crennulata. Mermaids cup. It's a type of algae. http://www.saltcorner.com/AquariumLibrary/browsespecies.php?CritterID=2014