What exactly killed Tarzan's Father?
Was he killed by the charging ape, or was he just knocked out by the ape and then later killed by the snake that the viewer sees crawling over him while the father is down on the floor of his little tree house? Later in the movie doesn't the viewer see the skeleton of the father in the tree house, and have a vague recollection that the skeleton has a cracked skull.
In the book he is clearly killed by the charging ape--also they are marooned on the island by mutineers, not by a shipwreck.