In the video, a person is seen holding a plastic bag filled with water and jellyfish. The person then carefully releases the jellyfish into a fish tank. The fish tank already has a blue lobster and a few jellyfish swimming in it. The person then takes a stick and stirs the water in the tank, causing the jellyfish to float around. The person then takes out the stick and continues to stir the water with their hand, causing the jellyfish to move around the tank. The person then takes out the stick again and continues to stir the water with their hand, causing the jellyfish to move around the tank.