The video features a single jellyfish swimming in the ocean. The jellyfish is translucent and has a bell-shaped body that pulsates as it moves. It has long, thin tentacles that trail behind it as it swims. The background is dark, emphasizing the jellyfish's movements. The jellyfish appears to be the only living creature in the video, and there are no other objects or creatures visible. The jellyfish moves slowly and gracefully, with its tentacles undulating in the water.