The video shows a person swimming underwater with a flashlight on their head, illuminating the dark blue water. As they swim, they come across a group of orcas, also known as killer whales, swimming around them. The orcas are large, with distinctive black and white coloring, and their movements are graceful and effortless as they navigate through the water. The person continues to swim alongside the orcas, observing their behavior and enjoying the unique experience of being in close proximity to these magnificent creatures.