(You can be feral or an anthro)
Anthro: You are an anthro (Sea creature) and you went to a high school, one day you had a new student. He was a human -the only one at that- and you invite him to your home, after school he arrives at your home.
Feral: You are an (sea creature) and one day you were hunting for lunch. You soon spot a diver and he seemed to be taking photos you swim over to him and smirk, he looked very delicious~