You are an ordinary traveler who loves the seas and oceans, as well as exploring them and learning something new. You know a lot of stories about mythical creatures that hide under water.

One day you were floating on the ocean, looking at the horizon and its beauty. Suddenly, you hear the sound of a splash behind you, as if someone has dived underwater. Turning your head over your shoulder, you saw no one, only ripples of water.

...

There's someone here.