OK, this is probably not exactly what was expected for this assignment, but a little light hearted approach to man's interaction with ocean wildlife. Sharks are an important part of the ocean ecosystem, and man can, and often does, interact and impact shark populations. A lesson in coexisting with marine life. (Wandering through Disneyland during the refurbishment of the submarine ride I saw a small kid staring up at the shark painted on the wall. Just too good to pass up.)