shark, marine animal, nocturnal behavior, swimming, underwater, ocean, moonlight, soft ambient lighting, coral reef, fish schools, hunting, stealthy movement, sleek skin texture, sharp teeth, dorsal fin, side view, dynamic composition, realistic, deep sea, bioluminescent organisms, silhouette against moon, predator, marine life, 3/4 view, clear water, reflective scales, detailed shadows, calm sea, night time, marine ecosystem.