High-tech, sleek, black submersible yacht, shark-fin shaped, floating on calm ocean waters, interior lit with warm, golden light, creating a contrast with the dark exterior; large panoramic windows reveal a luxurious interior; modern, comfortable seating areas are visible, natural wood floors and furniture; exterior is glossy, smooth, black; low angle, aerial view, showcasing the vessel's unique design; calm, serene atmosphere; realistic water reflections; futuristic, modern style; photorealistic rendering; detailed surface texture on the exterior; detailed interior lighting and furnishings; water is dark blue-gray, slightly rippled; subtle light haze; high contrast between dark vessel and the light, calm water; minimal clouds in the sky; --ar 16:9 --q 2 --s 750