Narwhals Spend at Least Half their Time Diving for Food, but Can Fast for Several Days after Meal (image) PLOS Share Print E-Mail Caption A group of narwhals in Scoresby Sund, East Greenland. Credit Photo by Carsten Egevang. Usage Restrictions CC-BY: Redistribution allowed with credit. 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.