Pritchard used modified diving gear to paint underwater, setting up an easel at depths up to fifty feet, and using oil crayons and canvases specially treated to work in that environment [REF].
In his lifetime, Pritchard's works were displayed both as art and as natural science documents, notably at the Galerie Georges Petit in Paris, at the Cleveland Museum of Natural History,[REF] at the American Museum of Natural History in New York City,[REF][REF] and in Pasadena at the Grace Nicholson gallery [REF].