what's this?

Discussion in 'ID This!' started by reef4girl, Jun 25, 2010.

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  1. inwall75

    inwall75 Giant Squid

    Joined:
    Sep 10, 2003
    Messages:
    7,172
    Location:
    America
    There are different types of "cup corals". However, all of the non-photosynthetic cup corals that I'm speaking of have a skeleton base. If the coral pulls all the way in, it's shaped like a cup (with ridges inside the cup).
     
    inwall75, Jun 26, 2010
    inwall75, Jun 26, 2010
    #11
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