Forbidden Love's Fruit: The daughter of a human and a mermaid

What happens when a Human has children together with a mermaid?
"Papa!" My younger sister, Marielle excitedly flaps her tail at the sight of my father. "Hello, my little sea princess" My father quickly hugs Marielle. "Good afternoon, Father," I say while my father gently pats my head. "Good afternoon to you too, Sereia." My father says. "Wassup papa shark," my loud brother, Raen says confidently. It has been 2 hours since we rose to the shore. My mother, Attina giggled at the sight of my father and siblings playing around. "How I wish we could stay like this forever."