 Well, it's Shark Week, and great whites have been spotted in Cape Cod waters in numbers. Massachusetts State Fisheries and Shark Biologist Greg Skomo says that though these creatures are here to feed on seals, sometimes they bite humans by mistake. Remember, the peak months are August, September, and October. The sharks are moving in, so the potential for a shark bite is always there. It's a low-probability event, but it does happen.