To play the role of Doreen as a child, director Sam Newfield used his own daughter, Jackie Newfield.
Bwana means boss or master.
Shot in 1943, not released until 1944.
At about 33 minutes Buster Crabbe's character tells his companion that he'll "never win a prize swimming that way.". The inside joke is that Crabbe won a medal at the 1932 Olympics - in swimming!