Candy cane growth?

[newmonium]

My candy cane has this 'inflation' on its stem. I don't know how to describe it. It's colorless and when I shined a flashlight on it, it closed up. Hard to take a pic of it but it's on the low right of the green head. I would swear it's a new head that hasn't colored up but I've never seen something like it... Any ideas?

 

[cloak]

Tunicates perhaps?

 

[newmonium]

Tunicates perhaps?

Don't think so. Looked them up online after this. Nice thought though...

 

[Flippers4pups]

Has this moved at all? Looks to be a nudibranch or sea slug in shape. Hard to see in the pictures.

 

[newmonium]

Has this moved at all? Looks to be a nudibranch or sea slug in shape. Hard to see in the pictures.

To clarify, this looks like a hump of stem that trapdoors open.

 

[newmonium]

To clarify, this looks like a hump of stem that trapdoors open.

It is open in this picture

 

[newmonium]

More pics after lights out... Thoughts?

 

[newmonium]

Two black spots on back, looks like a shellfish of some sort, like a clam or scallop?

 

[sfin52]

Barnacle perhaps.

 

[Flippers4pups]

Okay, yes with better pictures it looks like a bivalve. Which one, don't know? It shouldn't be a problem, but it's interesting that it attached to the base of the caulastrae.

 

[newmonium]

Thanks everyone