What's growing on my octospawn?

[matti2uude]

I just noticed this growing on the side of the stack of my octospawn. Any idea what it is? Is it a new head growing?

 

[ronzi]

My guess, a tunicate. Cool little creatures, totally harmless if that's in fact what it is.

 

[matti2uude]

I think you're right.

 

[AJQ69]

Tunicates

 

[RLM60]

They look more like vermetid snails to me. Are they hard?