Platypus - Ryan Benrud provides information on Ornithorhynchus anatinus, its classification, habitat, adaptation, nutrition, reproduction and other interesting facts. - http://acadweb.uwlax.edu/07Spring/SAH/BIO203/benrud_ryan/
Amazing Animals: Duck-billed Platypus - Information on this semi-aquatic mammal found in Australia. - http://www.bbc.co.uk/nature/reallywild/amazing/platypus.shtml
Australian Platypus Conservancy - Information about the platypus (Ornithorhynchus anatinus), research, its conservation and protection, and platypus-spotting opportunities. Also offers merchandise for sale. - http://platypus.asn.au/
Platypus Tropical Research - Information, field research trips, first platypus research project in Tropical North Queensland. - http://www.wildscapes-safaris.com.au/tpresearch.htm
Sleep of the Platypus - Article by Henry Gee about the sleeping patterns of the platypus as compared with other mammals. - http://helix.nature.com/nsu/980813/980813-5.html
Rainforest Platypus - Rainforest Platypus, photos and text. Courtesy of Chambers Wildlife Rainforest Lodge, Atherton Tableland, Far North Queensland, Australia - http://www.rainforest-australia.com/platypus.htm
What is a Platypus? - Etymology and a reading list. - http://www.platypuscomputing.com/platwhat.html