I don't want the image to contain bright or vivid colors, as this could detract attention from the leeches. I don't want unnecessary or distracting objects, such as tools, clothes or accessories, to appear in the image. I don't want the image to be set in an urban or man-made environment, as this could detract from the natural setting of the leeches. I don't want people or animals in the image, except those specified in the scenarios. Lastly, I don't want any commercial brands or logos to be shown in the image, to keep the focus on the leeches and their environment.