The Question and Answer section for The Most Dangerous Game is a great resource to ask questions, find answers, and discuss the novel.
I recall that in the old 1930's movie, the captain is concerned about shark infested waters and hitting rocks.
Although, I am not a fan of hunting for sport, Rainsford gains my sympathy when he reacts with horror to Zaroff's idea of intelligent prey.
He describes evil as a tangible presence,
All I could get out of him was `This place has an evil name among seafaring men, sir....Sometimes I think evil is a tangible thing--with wave lengths, just as sound and light have. An evil...