Stomatella snail or bad hitchhiker?

[Kyan]

Can someone please help me identify this hitchhiker?

 

[Shibaken3]

not sure if stometella can u get a better picture that's closer

 

[Goaway]

Flatworm or seaslug type creature. Thst is no stomatella. If its a friend, i have no idea. I doubt it's a sea hare. Do a search on sea hare and see what you think.

Better pics might help for amore possitive id

 

[Kyan]

not sure if stometella can u get a better picture that's closer

I’ll try and update post once it comes out again.