Swimming anemone?

[Reefer1003]

Would love to know what this is that came in on one of my frags!

 

[smartwater101]

Video is pretty low res. Can you snap a picture?

I had a tiny upside down jellyfish hitchhike on my rocks. Lived a year or two (picture of it is my profile pic) and then eventually disappeared. Probably a victim of the overflow.

 

[Miami Reef]

I had the same thing on my zoanthid frag a long time ago! Nobody knew what it was so I threw it out in case it was bad.

 

[Miami Reef]

Here’s in my thread! https://www.reef2reef.com/threads/help-is-this-a-parasite-on-my-new-zoas.330197/

It’s on the underside of the base of the plug. (I described it exactly like the video in my thread!)

 

[Reefer1003]

Hard to see the movement in this picture, but it looks like a mix between a jelly fish and am anemone?

 

[sharky79]

Jelly and octopus? Definitely interesting

 

[smartwater101]

Its tentacles look thicker than a typical jelly. Not sure but I'm super curious what it is.

 

[ScottR]

look up hydroids. Similar to jellyfish. It will sting things.

 

[Sailfinguy21]

Id say its a baby alien from prometheus.. Id burn it if it were me

 

[homer1475]

Sea spider perhaps?

jellys don't typically have specific movements like that thing does.

Hard to tell from the low res pics.