In this last 'report' on his expedition to the Red Sea, the Indian Ocean, and the China Sea, Hans Hass describes his most daring exploit and shows how he and Eibl, by offering themselves as guinea-pigs to the inhabitants of the 'shark wreck', found out something of great use to shipwrecked sailors.
Directed and produced by Hans Hass in association with the BBC Natural History Unit
(A film series)