Hippos Observe Remote Controlled Sampling Boat (image) Cary Institute of Ecosystem Studies Share Print E-Mail Caption Hippos observed a remote-controlled boat used to measure water chemistry in hippo pools. Credit Amanda Subalusky Usage Restrictions 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.