Small creature found on live rock

[RedFrog211]

My tank is currently fish-less due to ich and going through a phase of dinos (talk about struggling.) today I noticed a small green creature on the live rock. Thinking it was a nudibranch, I captured it with a pipette. Upon further examination, I realized I had no idea what it was. I found another one, and set them side by side (one open, and one closed) any idea? It almost looks like some kind of polyp. Any feedback would be appreciated!

 

[720 Reefer]

Looks like a pipe organ coral polyp to me

 

[RedFrog211]

Looks like a pipe organ coral polyp to me

I agree, but it has no calcified base- I do have GSP in the tank, but no pipe organ to my knowledge. Can a polyp survive free floating like that?

 

[dwest]

Any motion? They look like possibly mini brittle stars.

 

[RedFrog211]

Any motion? They look like possibly mini brittle stars.

Yep! The tendrils move- can brittle stars be that color?

 

[dwest]

Yep! The tendrils move- can brittle stars be that color?

After second look they look more like a coral polyp of some sort.

 

[RedFrog211]

After second look they look more like a coral polyp of some sort.

My friend is in agreeance with alyamaha and thinks it’s pipe organ. The only thing confusing me is the lack of a central stalk or calcified base

 

[vetteguy53081]

+1 on pipe organ

 

[RedFrog211]

+1 on pipe organ

Definitely looks like it! Thank you