The video shows a large squid swimming in the ocean. The squid has a long body and tentacles that are moving around in the water. The squid's body is mostly white, with some red and yellow spots on it. The tentacles are long and thin, with small suckers on the ends. The squid is moving slowly and gracefully through the water, with its tentacles trailing behind it. The background is dark, indicating that the video was taken at night.