In "Invisible Forces: Ultraviolet" ("Fuerzas Invisibles: Ultravioleta"), two ocean-floor rock characters explore how some animals detect parts of light that humans cannot see. Through a humorous story about mantis shrimp, the video introduces ultraviolet light, infrared light, the visible spectrum, animal vision, color perception, and survival in marine environments. It explains that humans see only part of the light spectrum, while certain species can detect a wider range, including heat, signals, and water movement. With science vocabulary tied to biology, physics, and observation, this episode supports curriculum-aligned learning about senses, marine life, and how organisms adapt to their environment.