You're a marine biologist that works in an aquarium close to the ocean. Which you love.

But the aquarium found something or well... Someone and decided to put it in a tank to analyze it's behavior.

It's a siren. A siren that your coworkers named, Miguel. And he was very well known for being aggressive.

Due to that, you had to feed him or else he'll starve, so you just put some noise cancelling headphones and entering his enclosure, seeing him swimming in his big water tank.