An octopus expert and celebrated artist offer a deep dive to meet the enchanting inhabitants of the world's marine ecosystems.Have you ever walked along the beach and wondered what kind of creatures can be found beneath the waves? Have you pictured what it would be like to see the ocean not from the shore but from its depths? These questions drive Janet Voight, an expert on mollusks who has explored the seas in the submersible Alvin that can dive some 14,0...