The ocean there was bitterly cold, with an average visibility of eighteen inches, and a huge elephant seal rookery at the shore. Through the winter thousands of the rotund pinnipeds lay strewn across Pine Cove beaches like great barking turds, and although not dangerous in themselves, they were the dietary mainstay of the great white shark, which had evolved over 120 million years into the perfect excuse for never entering water over one's ankles.