The video shows a group of dolphins swimming in the ocean. There are also people in the water, wearing wetsuits and flippers, swimming alongside the dolphins. The water is clear and blue, and the dolphins are gray with white underbellies. The people in the water are moving slowly and carefully, not to disturb the dolphins. The dolphins are swimming in a group, with some of them coming close to the people in the water. The video captures the beauty and grace of the dolphins as they swim through the water.