The Australian Platypus Conservancy, "an independent organisation dedicated to conserving the platypus and its freshwater habitats," offers this informative Web site about "one the world's most unusual animals." Visitors can learn about platypus biology and ecology in the Platypus Fact File; find out how to become involved in platypus conservation efforts; read the latest platypus-related news in...

This Web site is offered through C. Campbell's Natural Worlds, a "completely nonprofit, education online series which exists as a means of providing detailed information on a variety of topics within the natural history field." The Thylacine Museum, not surprisingly, is devoted to the now extinct thylacine (also known as the Tasmanian tiger). The site includes "information covering virtually all...