In the video, a person is seen scuba diving in the ocean at night. The diver is wearing a blue mask and a snorkel, and is swimming near a coral reef. The reef is covered in various types of coral, including brain coral and staghorn coral. The water is dark, but the diver's flashlight illuminates the reef, revealing its intricate details. The diver appears to be exploring the reef, moving slowly and carefully to avoid disturbing the marine life. The video captures the serene and mysterious atmosphere of the underwater world.