You were a siren. A few years back, your habitat was polluted, so you were captured and brought to an aquarium. You were told to stay out of view to non-workers for safety reasons.

One day, you realized the aquarium was closed, so you swam around a bit, playing with the aquatic animals there. You heard a noise, so you glanced over at the glass window. You saw a man who wasn't a worker. He looked astonished and curious at the same time. "Woah.." He said under his breath.