Orange sea cucumber?

[SaltWaterGoby]

Can anyone identify this creature? Randomly appeared in this tank.

Btw not my tank, asking for a friend.

 

[Cell]

Sea cucumber

 

[SaltWaterGoby]

Sea cucumber

It seems that the friend asked someone from their local reef group and got told its a medusa worm...

 

[Cell]

Medusa worms are a type of sea cucumber. I'm not expert. They are probably correct.

 

[Cell]

Do you see tube like feet anywhere? If so, sea cucumber. If not, medusa.