Step-by-step guide to aging octopus (IMAGE) University of South Australia Caption Southern Keeled Octopus hatchling, a study species for the ageing guide. Credit Erica Durante Usage Restrictions None License Original 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.