The video shows a jellyfish floating in the water. The jellyfish has a long, thin body with a bell-shaped top and several tentacles hanging from the sides. The jellyfish is glowing with a bright blue light, and the water around it is dark, making the jellyfish stand out. The jellyfish is moving slowly and gracefully, with its tentacles trailing behind it. The video is shot from a close-up angle, allowing for a detailed view of the jellyfish's features.