I'm that weirdo who goes "A nudibranch!" when spotting (obviously a drawn) one in a #Moomin cartoon. That 90s Japanese anime one, some 'Round Island' episode. S3x 24/24.
Little My + tentacle non-hentai included. No, srsly, she picks up a big red octopus from a shallow pool, and that then wraps itself around her head. Moments later to ink her face.
My Elysia name not hailing from oceanic elysias, but the reason I know nudibranch style things, too.