The video shows a person swimming in a dark body of water. The person is holding a flashlight, which is illuminating the water around them. The person's movements are slow and steady as they navigate through the water. The flashlight's beam creates a contrast between the dark water and the bright light, highlighting the person's actions. The person's swimming technique is not visible due to the darkness and the limited field of view provided by the flashlight. The video does not provide any additional context or information about the location or purpose of the swimming activity.