Pyrostephos vanhoeffeni, a siphonophore (IMAGE) Pensoft Publishers Caption This beautiful siphonophore, Pyrostephos vanhoeffeni, is typically encountered in Antarctic waters. Siphonophores are not an individual animal, but a colony of individuals that all serve a specific function and are morphologically different. Credit Dr. Emiliano Cimoli Usage Restrictions Credit must be given to the creator. License CC BY 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.