I have a question about hypothetical biology/anatomy. In my fantasy world, there are two types of sirens; freshwater and saltwater sirens. (With freshwater sirens being more rare.) I have a character named Wisteria whose mother was a freshwater siren and her father was a human. I was wondering if it was hypothetically possible for her to breathe underwater and on land.
Of course, I know that it’s fantasy and I could do whatever the hell I want, but I like putting reality into my writing. How would it be possible for her to breathe on land and underwater? What kind of anatomy would be required?
I thought about all sorts of things. Maybe she’s kind of like a frog and she breathes through her skin? Or maybe freshwater sirens are like whales and they can just hold their breath for a really long time? I don’t know if it’s important to know, but Wisteria lives in a marshland/swamp with tons of lakes and ponds and rivers, which is part of the reason why I was thinking ‘frog’.