Through the linked pieces of The Coral Sea, Patti Smith honors her comrade-in-arms Robert Mapplethorpe (1946-1989). She tells the story of a man on an ocean journey to see the Southern Cross, who is reflecting on his life and fighting the illness that is consuming him. Metaphoric and dreamy, this tale of transformation arises from Smith's knowledge of Mapplethorpe from a young man to a mature artist; his close relationship with patron and friend,...