In this coastal home office, a sculptural travertine desk sits beside a porthole window framing the sea. Limewashed plaster walls with soft seafoam patina lead to arched niches fitted with driftwood shelves displaying shells. A capiz shell pendant and a skylight cast watery reflections across the ceiling. A teak-and-canvas sling chair and a plush wave-pattern rug in teal and aqua complete the airy, beach-swept workspace.