Cook Inlet beluga whales (IMAGE) University of Washington Caption Beluga whales photographed in August 2021 in Cook Inlet, Alaska. The population was most recently estimated at just 331 animals. A first description of this population’s vocal repertoire shows that many of the most common calls are masked by shipping noise. Credit Arial Brewer/University of Washington Usage Restrictions With credit License Original 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.