What In Tarnations

It'sa red macroalga of some sort. Closest I can find is Flahaultia tegetiformis. Gets to about 3-5 cm across and feels tough and leathery.
 
Thanx Dave,,yeap sure does feel leather...guess its not bad to have..adds some color to my tank
 
abracadabra?

You sure David Copperfield didn't lose a silk hanky during a recent stage show?
 
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