A selection of some pool blue, C-shaped waves

Gallerist André Emmerich watching David Hockney paint C-shaped waves on his pool at Top Gallant estate, Pawling, New York, 1986.

Pablo Picasso, pool at Villa El Martinete, the Marbella, Spain, 1961.
Jorge Macchi, Piscina
Keith Haring's mural for a public pool in New York City’s Greenwich Village, 1987.
Donald Judd, Bench and Swimming Pool, 1982
George Braque, Les Poissons, at Fondation Maeght, a museum and sculpture park, Saint-Paul de Vence, France, 1963