The video shows a jellyfish swimming in the ocean. The jellyfish has a translucent body and long tentacles that trail behind it as it moves through the water. The ocean floor is visible in the background, with small rocks and pebbles scattered around. The water is clear, and the light from above creates a dappled effect on the jellyfish and the ocean floor. The jellyfish moves slowly and gracefully, its body undulating with the movement of the water.