Mysterious harbor seals are the latest point of contention in the Pebble mine debate as the government considers the possibility of listing Iliamna Lake Harbor Seals on the Endangered Species list. This comes after an environmental group put forth a petition urging the listing. They cite threats from ocean acidification, climate change, and the proposed Pebble Mine. KDLG’s Ben Matheson has more on the freshwater seals at the center of the debate.