Something worm-y?

[ogos]

Hey there, I just started my first ever saltwater tank after several years with freshwater, and after getting a couple pounds of wet rock from my LFS I noticed a decently sized tendril with spines sticking out of a hole. I also ended up spotting a much smaller, but ultimately similar looking worm-looking thing with tube feet that appears to be fairly inactive. I have asked on some other forums and the suggestions of brittle star + severed limb, and some kind of strange cucumber have been given. Any help?

 

[winzig]

no picture?

 

[ogos]

no picture?

Sorry, I included an Imgur album link. Not sure why it isn't appearing, I can see it on my end as an imbedded slideshow. I'll try to add to this reply as well though

 

[papercrab]

Juvinile bobbit worm? Its quite a puzzler that one, so needs a second opinion.

 

[papercrab]

Juvinile bobbit worm? Its quite a puzzler that one, so needs a second opinion.

No, im totally wrong. Didnt see the sucker feet. If it moves by itself for a week or 2 without any sign of regeneration or decomposition its probally a severed brittle star limb. If you find multiple or bigger ones ista probally a sea cucumber or onother detritevor. Most likely harmless

 

[BristleWormHater]

No, im totally wrong. Didnt see the sucker feet. If it moves by itself for a week or 2 without any sign of regeneration or decomposition its probally a severed brittle star limb. If you find multiple or bigger ones ista probally a sea cucumber or onother detritevor. Most likely harmless

Looks like a dropped serpent star arm to me as well.