Sea Mouse

Found a sea mouse on the Dungeness coastline.

[willdavidson]

This has just solved a twelve year old mystery for me!! I found one of these, also at Dungeness, on the beach there when my eldest was just a baby. I felt a weird texture under my fingertips as I put my hand on the stones next to me, and when I looked it was the underside of a strange sea creature. Unfortunately the one I found was dead, but I never knew what it was until now! Thank you so much for solving the puzzle! Also saw dolphins down there on the same day.

[citizenxuniverse]

It looks like an event lives sea slug/molusk