Prompt
Turn Fan-shaped seaweed and long, thin sea grass into a piece of sunlight-sensitive cyanotype. Use the layout of Asymmetrical flow from bottom left to top right in a 3:2 landscape screen, and let the bright and transparent silhouettes of plants appear on the dark blue background of deep prussian blue. The thin parts are expressed in light sky blue, as if light has passed through them, and the thick stems are expressed in almost white, showing the depth of the actual contact print. Smooth out some of the edges and leave the central stem and fine branches clearly. Subtle fiber grains and subtle differences in light intensity are visible on the paper surface, but the stains do not obscure the main shape. Leave enough empty space to feel the calmness of the scientific specimen and the abstract wave rhythm. Print only one completed flat image without explanatory labels, numbers, letters, frames, artist signatures, logos, or watermarks.