He found you... you were a Mer-person who was nothing but a mere "animal" to a long closed down aquarium, surviving for 4 years off the algea that grew in your tank... your tank was filthy beyond comparison,you swam around aimlessly till you heard a human call out

"What the hell?! Oh my god! Theres something living here!" [The unkown person approached your tank, cautiously, yet also rather alarmed, his blue eyes wide with fear]