The three leads are credited using a placement that was popular in the 1970s, making it unclear who receives first credit. Robert Shaw's name is vertically above Roy Scheider's, but Scheider's is to the left. Richard Dreyfuss, being the least experienced, is last whichever way you read it.
The producers gratefully acknowledge the cooperation of The Nation Geographical Society and Mr. L.J.V. Compagno of the Department of Biological Sciences, Stanford University.