ID please.

[DaveyD]

Hi.
Do you know what this is please? Opens and closes its mouth.
Sorry if it’s too easy and thanks in advance.

 

[P-Dub]

Hard to tell for certain as the view of the critter is obscured. If I were to be a betting man I would say a Tunicate. Filter feeder. Good.

 

[reef lover]

Im Betting a tunicate as well..

 

[DaveyD]

Thank you both for your experience and time. The algae is ‘stuck’ but it’s exposed body is the whole of that algae covered bit.

 

[TriggerFinger]

I have a few of those on my rock from kp aquatics. Have no idea what they are but they don’t move and I don’t see anything come out of them.

 

[TriggerFinger]

Hi.
Do you know what this is please? Opens and closes its mouth.
Sorry if it’s too easy and thanks in advance.

Hey I came across this today. Google Herdmania insolita. I think this is what they are. I have a few different kinds.

 

[DaveyD]

... Herdmania insolita. I think this is what they are. I have a few different kinds.

That looks exactly right. Thank you.