ultra-realistic photograph of a luxury handcrafted wooden bathtub sculpted in the shape of a human skull. The bathtub is carved from rich polished hardwood with visible natural wood grain, smooth curves, and highly detailed skull facial features including eye sockets and teeth. Clear water flows from a modern curved metal faucet into the tub, creating gentle ripples and reflections. The bathtub is placed in a high-end modern bathroom with dark marble flooring, wooden cabinetry, and warm ambient lighting. Professional interior photography, realistic water movement, natural shadows, premium materials, photorealism, 8K resolution.