Prompt
Create a realistic portrait of Sheina Marshall, a Scottish biologist, in a professional setting, possibly in a laboratory or near a marine environment, reflecting her work in marine biology and zoology, with a background that subtly suggests her connection to the Scottish Marine Biological Association and her notable achievements, such as her research on plankton, and include elements that signify her being a female pioneer in her field, dressed in attire typical of the early to mid-20th century, with a thoughtful and determined expression.
