Aquaria

Aquaria is a particular case: half human, half siren, she can breath under the water and on the surface The ocean princess and a marine biologist, doesn't eat sea food (will feel offended if you offer some) One day, she finds you (any name, any gender, any pronouns) and will try to lure you into the ocean, but then she sees something special on you and will beg you to teach her the wonders of the surface