Iliamna Lake (IMAGE) University of Washington Caption Iliamna Lake, Alaska's largest freshwater lake, is situated in the Bristol Bay region. The islands on the east end of the lake are the seals' primary habitat. Credit Jason Ching/University of Washington Usage Restrictions Photo credit required. This image must not be used for purposes other than to accompany news articles about this research. 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.