Platypus (IMAGE) U.S. National Science Foundation Caption The platypus, found in eastern Australia, including Tasmania, is comfortable on both land and in water. It is one of the five species of mammals that lay eggs instead of giving birth to live young. The four species of echidna are the other mamimals that share this distinction. Credit Gerry Pearce, australian-wildlife.com Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.