Art style: Flat Design.
A bright yellow rectangular sea sponge with large blue eyes, three eyelashes on each eye, and two prominent buck teeth. He wears a crisp white short-sleeved shirt, a small red necktie, and brown rectangular trousers held up by a black belt. His socks are white with blue and red stripes, paired with shiny black shoes. He has a cheerful, optimistic expression and a porous texture. The background is a vibrant underwater setting with sandy floors and flower-shaped clouds.
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FINAL STYLE ENFORCEMENT (this is the authoritative rendering directive — it overrides any style wording elsewhere in the prompt):
Render this image entirely in "Flat Design" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "Flat Design". Keep the subject, composition, camera angle, lighting direction, and colour palette from the description above — but EVERY surface, skin, fabric, material, and environmental element must be rendered in the "Flat Design" idiom, not in any other medium.
