The three forms of A. linnaei (IMAGE) Hokkaido University Caption The three forms of A. linnaei: Epilithic (A, B), marimo (C), and free-floating (D). (Photo: Isamu Wakana). Credit Isamu Wakana Usage Restrictions This image is copyrighted but may be used to report this press release if credited as instructed. 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.