Wildebeest Crossing the Mara River (image) Cary Institute of Ecosystem Studies Share Print E-Mail Caption Wildebeest crossing the Mara River, with animals in the act of drowning. Credit Chris Dutton Usage Restrictions May be used to promote this press release. 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.