Chain Catshark (image) American Museum of Natural History Caption This photo shows a green biofluorescent chain catshark (Scyliorhinus retifer). Credit ©AMNH/J. Sparks, D. Gruber, and V. Pieribone Usage Restrictions Can be used with the appropriate credit 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.