In this 1947 film by diving pioneer Hans Hass, marine biology work is shown with the help of early diving equipment. During the expedition Hass was able to observe and film shark behaviour and collect plant samles from underwater caves.
Hans Hass
himself
Director
Aug 8, 2014
Aug 9, 2022
May 18, 2003
Jul 20, 2002
Jun 25, 2014
Feb 14, 2003
Apr 14, 2000
Oct 19, 2025
Sep 4, 2025
Sep 22, 2016
Apr 5, 2019
Sep 10, 2022
Sep 6, 1971
May 20, 2013
Hans Hass-Filmproduktion
Germany
Deutsch
