Huh, wouldn't you know. Googling "How to take care of a sea slug" actually comes up with several articles on how to care for sea slugs and other oceanic invertebrates.
My, what is that, Naka-chan? I found it a little while ago when I was out sortieing!A sea slug...Aaand finished ♡It's so cute, I decided to bring it back to the base ♡It's a sea slug