did you know that nintendo (very obscurely) confirmed cuttlelings way back in splatoon 1? Theres a bio on them, but I could not find it. I remember their called the koikals I think.
They weren't actually based off of super sea snails, though I can tell why you assumed that. It would make sense for murch to be a bit more awkward around them, though.
Wow! Those are similar to my Nautling species that I’ve been working on, unfortunately I don’t have any drawings of them, because I don’t know how I would draw them-