Starfish looking thing

[WhenKeepinItReefGoesWrong]

I've got something in my love rock that looks like some kind of starfish within the rock. It has an active feeding response with it's long tentacle arms. Any guesses what it is?

Thanks!

 

[WhenKeepinItReefGoesWrong]

Found another one. Tank has been up about 6 weeks. Finding 2 in the same night makes me a little nervous that it is a pest...

 

[Sharkbait19]

I can’t see the vids, could you upload a pic?
Your description sounds like a brittle star though. They are very common hitchhikers and make for a good part of the cuc (and one of the easiest echinoderms to keep).

 

[WhenKeepinItReefGoesWrong]

I can’t see the vids, could you upload a pic?
Your description sounds like a brittle star though. They are very common hitchhikers and make for a good part of the cuc (and one of the easiest echinoderms to keep).

I don't think they're brittle stars. It's like they're in the rock with their mouth facing out

 

[ISpeakForTheSeas]

I don't know what it is, but I do agree it doesn't look like any brittle star I've seen - it looks like it might be some kind of filter feeding worm to me, but I'm definitely not an expert on worms.

Also, I love the barnacles in that second video - I think they add a lot of character to the tank.

 

[WhenKeepinItReefGoesWrong]

I don't know what it is, but I do agree it doesn't look like any brittle star I've seen - it looks like it might be some kind of filter feeding worm to me, but I'm definitely not an expert on worms.

Also, I love the barnacles in that second video - I think they add a lot of character to the tank.

Thank you! And couldn't agree more about the barnacles. I went with Tamba Bay Saltwater love rock and absolutely love it. The biodiversity is just incredible!

 

[damsels are not mean]

Maybe a medusa worm? Does not look exactly the same but it's worth a thought.

What happens if you touch them? Do they move? It looks kind of cool.

 

[WhenKeepinItReefGoesWrong]

Maybe a medusa worm? Does not look exactly the same but it's worth a thought.

What happens if you touch them? Do they move? It looks kind of cool.

Possibly. It would be huge though! They are pretty constantly feeding.

 

[Sleeping Giant]

I would pull that rock out immediately, that doesn't look good at all

 

[Sharkbait19]

Basket star maybe? Tbh I’m not sure what.
If it hasn’t been a problem, I doubt it will become one…but taking it out may be safest.

 

[WhenKeepinItReefGoesWrong]

I think I'll keep an eye on both of them for now, but take out the rock if they start looking like a problem.

 

[damsels are not mean]

Basket star maybe

I think you are right

 

[damsels are not mean]

Whatever it is it looks easy to kill with some kalk. No need to panic.

 

[WhenKeepinItReefGoesWrong]

I think you are right

Nice! Thank you guys!

 

[madmarks]

Look at Spotted Worm Sea Cucumbers. Since you can only see the arms there is no way to say what it is, but I was reminded of this photo. These are mostly Indo-Pacific, and not Atlantic in origin.

 

[WhenKeepinItReefGoesWrong]

Look at Spotted Worm Sea Cucumbers. Since you can only see the arms there is no way to say what it is, but I was reminded of this photo.

That looks extremely similar to it, I think you figured it out! Thanks so much!

 

[damsels are not mean]

Look at Spotted Worm Sea Cucumbers. Since you can only see the arms there is no way to say what it is, but I was reminded of this photo. These are mostly Indo-Pacific, and not Atlantic in origin.

cool i want one

 

[LiverockRocks]

Howdy, can't see the videos, but probably a hidden sea cucumber.
Reef safe and stay small.

Pseudothyone belli