A researcher examining ocean samples in a busy public space

Create a illustrated image of a researcher examining ocean samples in a busy public space. Compose it for an educational explainer, using textured gouache with clear value contrast. Make the central idea readable at thumbnail size and leave a deliberate area for editorial typography. Give the subject a clear silhouette, a consistent light source and believable texture. Avoid watermarks, logos, accidental text and duplicate objects. Keep people and hands naturally proportioned.

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