Weird grub looking thing

[Will_WhatIsThis]

I have no clue what this is. The only thing I thought it might be is a small bobbit worm but it doesn’t appear to be that?

 

[vetteguy53081]

At first I thought sea cucumber- Nope. Then Fireworm, not even close.
I believe this is a hesionid worm which are active and carnivorous. They are commonly found in hard- not soft substrates and rarely in soft sediment. The larger ones are carnivores and feed on polychaetes and other small inverts.

 

[Will_WhatIsThis]

At first I thought sea cucumber- Nope. Then Fireworm, not even close.
I believe this is a hesionid worm which are active and carnivorous. They are commonly found in hard- not soft substrates and rarely in soft sediment. The larger ones are carnivores and feed on polychaetes and other small inverts.

That does look pretty close. I’m just glad I got it out of the tank. I was about to transfer the rock it was in to my new frag tank. Thanks for the help.