Goniopora growth

Is it a colorful clam or just a pain looking clam. Great hitchhiker to have though.

Super plain. Nothing special about it, except that it showed up in my tank. It's staying closed so I don't really know if it's alive or what.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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