The Exxon Valdez oil tanker was transporting 55 million US gallons of oil when it collided with Bligh Reef. Eleven million of those US gallons leaked into Prince William Sound’s waters, and washed up onto 100-plus miles of coastline, killing thousands of birds and marine animals. Even with millions of dollars and a cleanup crew of over 11 thousand, the Alaskan land still wasn’t free from contamination by the early 2000s.