The video shows a large octopus swimming in the ocean. The octopus has a brownish-orange body and eight tentacles that are spread out as it moves. The background is a deep blue color, indicating that the video was taken in the ocean. The octopus's tentacles are covered in suction cups, and it has two large eyes on top of its head. The video captures the octopus from different angles, showcasing its size and the fluidity of its movements.