Prized for its caviar-potential roe, [the sturgeon] is currently hot among both international smugglers and ecological preservationists, and right on their dorsal fins is Carey. A lyrical and humane writer, the ecojournalist patiently tracked down hatchery biologists, luxury-food buyers, wildlife agents, and others whose livelihood depends on the sturgeon. He weaves their intersecting stories into one engrossing narrative.