BATHYSPHERE (from the Greek words "bathys" (deep) and "sphaira" (sphere) * EN: bathysphere; DE: Bathysphare, Tiefseekugel; FR: bathysphere; ES: batisfera; RU: батисфера) is the sturdy (usually made of steel) camera in the shape of the ball with the equipment, which is submerged on the steel rope from the ship for the observations under water, see within the "Underwater apparatus" article.