In "Lifeguard on Duty," Nelson de la Nuez's pop art prowess shines through a captivating portrayal of Marilyn Monroe at a lifeguard tower. Rendered in black and white, Monroe exudes timeless glamour against a backdrop of large, multicolored dots. De la Nuez's mixed media approach elevates the iconic image, fusing classic Hollywood allure with his signature pop art vibrancy. The juxtaposition of Monroe's elegance against the vibrant dots creates a visually striking and dynamic composition.