

Mermaids showing off their belly buttons
One detail that stood out to me ever since I was a kid is that mermaids are very often depicted with their belly buttons visible. It's such a small thing, but for some reason I couldn't help noticing it, especially with Ariel from The Little Mermaid. Even as a kid, I remember thinking it was interesting that she had a fish tail but still had a clearly visible navel.
It's such a small detail, but I find it really interesting from an artistic and fantasy-design perspective. Even though a mermaid's lower body is a fish tail, artists will often keep the human anatomy around the stomach and navel, which makes the character feel like a blend of human and aquatic creature
I think part of what fascinates me is that it helps reinforce the "human half" of the mermaid and makes the design feel more relatable and human despite the fantasy elements. But I'm curious if there's a deeper artistic, historical, or mythological reason why visible belly buttons became such a standard feature in mermaid depictions. Or is showing your belly button simply just a popular way merfolk express themselves with mermaid fashion.
I've noticed it across a lot of different mermaid artwork, illustrations, statues, costumes, and media, and I'm curious if anyone else has noticed this or has thoughts on why the belly button became such a common part of mermaid designs
Has anyone else noticed this, or am I the only one who paid way too much attention to this detail growing up
Is it mainly just a way of emphasizing their human half, or is there some artistic/history reason behind it?