The short story "The Fog Horn" by Ray Bradbury is about two men, Johnny and McDunn, who work in an isolated lighthouse. One night, they hear the fog horn sounding like a lonely animal crying. A large sea monster then emerges and communicates with the fog horn, revealing it is the last of its kind. The men feel sympathy for the lonely creature. They experiment by altering the fog horn's pattern, and the monster responds each time, showing it seeks companionship through the horn's sounds.