. . "JUVENILE NONFICTION / Science & Nature / Earth Sciences / Water (Oceans, Lakes, etc.)" . . "JUVENILE NONFICTION / Biography & Autobiography / Science & Technology" . . "Electronic books" . . "Juvenile works" . "Biography" . "Champions of the ocean" . . . . . . . . "Earth heroes champions of the ocean" . . . "Earth heroes : champions of the ocean" . "The youth, career and lasting contributions of some of the world's greatest natueralists and environmentalists." .