Seining for Fishes (image) Cary Institute of Ecosystem Studies Share Print E-Mail Caption This shows Drs. Wyatt Cross and Emma Rosi-Marshall seining for fishes in the Grand Canyon. Credit D. Walters Usage Restrictions Can be used to promote this story. Share Print E-Mail 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.