This little fan theory by Pure Imagineering proves that Ariel didn’t just change for her man (lame), she’s really an anthropologist studying humans! It’s certainly her hobby anyway, Ariel is just a huge human fan girl who geeks out over human stuff! I mean not only is she clearly into anthropology, but she’s also an archaeologist. How else can you explain her huge, secret underwater museum with her collection of human cultural artifacts (like dinglehoppers, lol). Anyway, here is the fan theory:

Source: Pure Imagineering