ID help: tiny hitchhiker with black head and white ring

[TheReelColton]

Came in on something I bought at a swap. Didn't notice until next day so I'm not sure what it was on.

 

[IKD]

I can’t see the video, but based on the title, does it look like this?

https://www.nano-reef.com/forums/topic/380425-caught-a-bobbit-worm/
Just to note, that is a Eunice worm in the picture, not an actual bobbit.

 

[TheReelColton]

I can’t see the video, but based on the title, does it look like this?

https://www.nano-reef.com/forums/topic/380425-caught-a-bobbit-worm/
Just to note, that is a Eunice worm in the picture, not an actual bobbit.

I added a photo and tried re-uploading the video. It looks teardrop shaped and slides around, not so much crawling.

 

[IKD]

I added a photo and tried re-uploading the video. It looks teardrop shaped and slides around, not so much crawling.

Lol, definitely not what I imagined in my mind. I don’t know what that could be, hopefully others will chime in.

 

[TheReelColton]

Another image

 

[Reeflix]

i think this is probably a juvenile version of something else... i literally have this on the tip of my tongue but just cant figure it out! looks like larvae to me

 

[JoJosReef]

Interesting! Following

 

[kjkszpj9]

nah, that looks like some kind of flatworm to me or a nudibranch, definetly not a bobbit worm