The video shows a large manta ray swimming in the ocean with a school of fish. The manta ray is dark grey in color and has a flat body with two large fins on either side. The fish are smaller in size and have a silver color. The water is clear and blue, and the sunlight is shining through the surface. The manta ray is moving slowly and gracefully, with its mouth open, possibly feeding on the fish. The fish are swimming around the manta ray, some closer to the camera and others further away.