Help ID This...?

  • We are currently upgrading MFK. thanks! -neo
**Video..

[video=youtube_share;lYNeh1_khQQ]http://youtu.be/lYNeh1_khQQ[/video]
 
I was going to say barnicle, then I watched the video... my best guess is some type of tunicate (aka sea squirts), harmless.
 
Thank you I'll try researching them. We're a bit nervous because you can look straight through the hole quite a bit meaning our zoas are actually growing ON this living "thing"..

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