What worm is this?

[Noireatsbear]

 

[SaltyCupcake]

Hi! I'm still new and I'm probably wrong here so take this ID with an enormous grain of salt:

I'm gonna take a long shot and say MAYBE that it might be an orange or yellow Hawaiian Ribbon Worm?

Edit: Upon closer inspection, it looks like it might have little bristles? Maybe a yellow bristle worm??

 

[fishguy242]

nice color ,haven't a clue,hope is reef safe

 

[sixty_reefer]

dorvilleidae worm and the algae in the glass is bryopsis.