In August, Science + Story will be going to the beach--figuratively, anyway. Here is the first installment, on shells. Marble Cone (Conus marmoreus), 31 to 150 mm, common throughout the Indo West Pacific, including the Philippines, where I spent part of my childhood. The Marble Cone is a carnivore of the rocky bottom. Like a message in a bottle, every shell on the beach has a story to tell. Each turban, limpet, conch, and cowrie can tell the trained eye stories about how and where it lived…