The video depicts an underwater scene where a large fish is swimming near a coral reef. The fish has a brownish body and is seen swimming around the coral, which is covered in green algae. The water is clear, and the lighting is dim, creating a serene underwater atmosphere. The fish moves gracefully, its fins undulating as it navigates the reef. The coral appears to be a mix of different types, with some branches and others more rounded. The fish seems to be the only living creature in the frame, and there are no other fish or creatures visible. The video captures the beauty and tranquility of underwater life.