What is this?

namlessdude

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I saw this random thing on my rock and I'm not sure if it's an algae or something else. It's very small and sometimes it retracts into the rock in a split second.

What is it?

20240920_124500.jpg 20240920_124416.jpg
 

Dom

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I thought it was Aptasia.
 

HAVE YOU EVER KEPT A RARE/UNCOMMON FISH, CORAL, OR INVERT? SHOW IT OFF IN THE THREAD!

  • 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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