In the video, a dolphin can be seen swimming in the ocean. The dolphin is moving its tail fin up and down, creating ripples in the water. The dolphin's body is mostly submerged, with only its dorsal fin visible above the water's surface. The ocean is a deep blue color, and the sky is overcast. The dolphin appears to be alone, with no other marine life visible in the frame. The video captures the graceful movements of the dolphin as it navigates through the water.