books.google.be - Famed in story as "the great leviathans," sperm whales are truly creatures of extremes. Giants among all whales, they also have the largest brains of any creature on Earth. Males can reach a length of sixty-two feet and can weigh upwards of fifty tons.With this book, Hal Whitehead gives us a clearer...http://books.google.be/books/about/Sperm_Whales.html?id=TKXdCli7nI0C&utm_source=gb-gplus-shareSperm Whales
