The video shows a large fish swimming in the ocean, surrounded by smaller fish. The fish is grey in color and has a long tail. The smaller fish are yellow and white and are swimming around the larger fish. The ocean floor is covered in rocks and coral, and there are bubbles rising to the surface. A scuba diver is also seen in the video, wearing a black wetsuit and a yellow oxygen tank. The diver is swimming near the coral and the fish, observing the marine life.