Thing with lobes?
A very distinct thing but not sure what it is. Looks like two lobes (#sipho without tail)?
Plus, if you stare long enough at the left central area, it looks like a face.
by yshish moderator, translator in response to firstname.lastname@example.org's comment.
You're right, it is a #Sipho #Twocups in a life stage without the tentacles/tail/. Check out the Comparison thread about Rocket-ship and Twocup Siphos: http://talk.planktonportal.org/#/boards/BPK0000005/discussions/DPK0000bkd There are many of them from other angles.
(Yeah, I think that staring long enough at anything will change it into a face.))