In the video, a person is seen underwater wearing a diving mask and snorkel. The person is holding a jellyfish in their hand and appears to be examining it closely. The jellyfish is translucent and appears to be quite large. The water around the person is clear, and the visibility is good. The person seems to be in a calm and controlled environment, possibly a controlled aquarium or a natural body of water. The jellyfish is the main focus of the video, and the person's actions suggest a sense of curiosity and fascination with the creature.