common dolphin (IMAGE) Flinders University Caption Common dolphins (Delphinus delphis) in New Zealand's Hauraki Gulf adjust their diet to available prey in each season Credit Cetacean Ecology Research Group (CERG), Massey University Usage Restrictions Cetacean Ecology Research Group (CERG), Massey University, NZ License Licensed content 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.