Brown with white spot worm?

[fsas89]

Hello, I am new to this forum and just got into this hobby (again) within the last 3 months, I did it as a teenager but stopped. I cannot figure out what this is, it came with a coral frag I bought today. Please help!

It has like a feather duster head

 

[fsas89]

 

[KJ]

Peanut worm good CUC!

 

[king aiptasia]

looks a lot like a sea cucumber with the tentacle arrangement, cool guest still

 

[fsas89]

looks a lot like a sea cucumber with the tentacle arrangement, cool guest still

This is the first time I have seen him out enough to get a decent picture. You think sea cucumber? Is that reef safe. I’m worried he’s gonna be a pest

 

[KJ]

This is the first time I have seen him out enough to get a decent picture. You think sea cucumber? Is that reef safe. I’m worried he’s gonna be a pest

Yes it is a sea cucumber you don't have worry too much about this specis!

 

[fsas89]

Yes it is a sea cucumber you don't have worry too much about this specis!

Awesome. Thanks a lot!!!