They are the most ferocious and clever predators in the sea. Their brains are the second largest of any animal. Highly intelligent, social, and persistent, their coordinated hunting efforts rarely fail in securing prey. Their diet consists of anything unlucky enough to be in their crosshairs: fish, sharks, squid, seals, whales, sea birds. And now, humans. Tuesday Harbor is an isolated village on Orcas Island north of Seattle in the San...