Deep ocean underwater shot. A...

Deep ocean underwater shot. A male diver in black wetsuit and diving fins swims forward through cold blue water. Streams of tiny bubbles float upward from his movement. Soft sunlight beams penetrate from the surface above, creating moving light patterns. His body moves with weightless grace, fins propelling with steady rhythm. Microscopic particles suspended in water catch the light. No dramatic changes, just pure realistic underwater atmosphere. Professional underwater cinematography, natural motion, ultra realistic, 4K.