Lotte has been called First Lady of Diving, she was the first underwater model and one of the first female underwater photographers. Her career began in 1949 as the only woman on Hans Hass’ crew during the filming of Adventure in the Red Sea, during which Lotte dove using a Drager closed circuit rebreather - which she learned to operate in the water! She has co-produced numerous films and co-written many books that document the adventures aboard their research vessel Xarifa.