Very interesting discovery, anybody seen these before?

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Tiny one

Aquarium Advice Newbie
Joined
Aug 4, 2012
Messages
6
Location
Hollywood, Florida
They are on the underside of live rock, are iridescent. Some are the shape of a Hershey's Kiss with a tubelike opening at the top. Others are a mass of porous white, egg like structure. See picture.

image-2774453113.jpg
 
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