Southern Resident orcas, the beloved, fish-eating orcas found only off the coast of the Pacific Northwest, are unlike any other orca population in the world. They are also one of the most endangered. Join Defenders of Wildlife and Whale & Dolphin Conservation for a special screening of Dammed to Extinction, an award-winning documentary that explores the relationship between Southern Resident orcas, salmon, and four dams on the lower Snake River in the Columbia River watershed.