The video features a jellyfish swimming in the ocean. The jellyfish is illuminated by a light source, making it glow in various colors. The jellyfish moves slowly and gracefully through the water, with its tentacles trailing behind it. The colors of the jellyfish change throughout the video, ranging from blue to purple, pink, and red. The jellyfish's body is semi-transparent, allowing viewers to see its internal structure. The background is dark, emphasizing the jellyfish's luminescence.