High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! The 35mm self-contained amphibious underwater Calypso camera was conceived by the marine explorer Jacques-Yves Cousteau 1910 1997, designed by Jean de Wouters and manufactured by Atoms in France. It was distributed by Spirotechnique in Paris from 1960 to 1962. The camera operates down to 200 feet / 60meter below sea level. The Calypso was sometimes advertised as the CALYPSO-PHOT. Nikon took over production and sold it as the Nikonos, which subsequently became a well-known series of underwater cameras.The Calypso has a built-in optical viewfinder and an accessory shoe on the top for a wide-angle viewfinder frame. It consists of two body parts that are locked together by the lens. It is sealed by Vaseline greased O-rings. In order to disassemble the camera, the lens must be removed by gently pulling it away from the body while twisting it either way a quarter turn.