Pulsating wierd critter

[besskurz]

To the specialists out there:
I saw this little thing growing for a couple weeks under zoas.
It looks like to be attached to the rock by a string - or this is part of their body.
It pulses in a very wierd way as you can see.

I looked into the tank again and now there is only a string. The body vanished. I'm positive it's out there somewhere cuz this is a jaubert fish bowl.

 

[Rick's Reviews]

Following

 

[besskurz]

Following

I thought it was an aiptasia... but this thing moves like a jellyfish.

 

[bradleym]

I think it is a species of hydroid/jellyfish. The smallest forms are free floating and microscopic. Eventually they attach to a rock as they grow. Then later the jellyfish breaks loose and becomes free floating again.

 

[Rick's Reviews]

Looks to me like a feather duster , fan worm just reaching out for food, could be mouth of worm or tail of a worm reaching for food, I'm thinking more wormy then jellyfish?

 

[sixty_reefer]

I can’t see the video, the description sounds like upside down jellyfish budding

they start like the video below almost hydroid looking.

 

[besskurz]

I can’t see the video, the description sounds like upside down jellyfish budding

they start like the video below almost hydroid looking.

Man you nailed. Thank you.

This is exactly how it looks to.

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Seems to be a jellyfish in its strobilation phase.

I'm happy that now I have a jellyfish somewhere lol if I ever found it again I keep posting updates here.

 

[TinnysReef]

I found these underneath some rocks in my frag tank? Would they harm anything?

 

[besskurz]

I found these underneath some rocks in my frag tank? Would they harm anything?

At least here I had no problem. It's just a nice creature to watch.
After some weeks they are released in water column and they dissapear / are eaten.