An 18-foot great white shark named Curly “slam dances” on top of a shark cage. Will she crush the cage? Will the door break open, leaving the men inside vulnerable? “Jaws Comes Home,” part of the Shark Week 2011 lineup, holds the answer. Great white sharks, in large numbers, are now suddenly being found swimming among surfers and vacationers just off beaches from South Africa to Australia, and up and down the coast of California. Just why they’re there and just what they’re doing is a mystery that Chris Fallows and an international team of sharks scientists are...