Please tell me these aren't baby bobbit worms, but I think you're going to say they are

[Just John]

Just found on some gulf live rock I have had for over a month now

 

[MnFish1]

hmmm - I would remove them if possible

 

[GuavaFrog]

That is a Eunicid worm, which is the group shared by bobbit worms. A lot of species are detritovores, but they're hard to identify. The safest option is to remove. Some people will keep them for CUC and the novelty.

 

[Zach B]

Sure is! Such a creepy creature. Best of luck

 

[ISpeakForTheSeas]

It's definitely a Eunicid species, but not necessarily a bobbit (in fact, I'd guess it's likely not a bobbit, as those tend to burrow in the sand) - there are a number of Eunice spp. and Leodice spp. that look like this (i.e. that look similar to the bobbit, Eunice aphroditois).

The handful of species that I've looked at that look like this are probably not ones that you'd want in the tank though.

 

[Zach B]

Sorry. I thought they were the same thing. Either way that thing is scary to me

 

[Just John]

I got it out. In the end I tossed that rock since that particular one came out of the gulf and was filled with a ton of holes for more to hide in. I also found a crab on it to get rid of. The crab goes back in the gulf since I live near the beach.

 

[Zach B]

I got it out. In the end I tossed that rock since that particular one came out of the gulf and was filled with a ton of holes for more to hide in. I also found a crab on it to get rid of. The crab goes back in the gulf since I live near the beach.

Nice catch