Got a tough one

[hiClouds]

My hermit has a couple housemates. One looks like a feather duster but another has a siphon. Can you identify this mystery shell mate?

 

[Timfish]

I'm going to guess a tunicate, beneficial filter feeder or maybe less likely the siphon of a clam.

 

[hiClouds]

I'm going to guess a tunicate, beneficial filter feeder or maybe less likely the siphon of a clam.

I was thinking the same thing actually. Imagine a clam stuffed in the shell.

 

[hiClouds]

Both siphons. I'd bet its a tunicate.