Nudibranch.. Good or bad?

[milliken5]

I think I have a nudibranch. Is it good or bad? Of bad how do I get them out of a 125 gal reef?

 

[cloak]

It looks kind of like the Caulerpa slug in the link below. (Elysia)

http://www.lionfishlair.com/hitchhiker.shtml

 

[BigJohnny]

Yea I agree, that looks like a sea slug. Nudibranch have more accoutrement on their body . That sea slug is streamlined.[emoji6]

 

[Sugar Magnolia]

Yep, harmless algae eater.