The Gulf oil spill is already being described as the biggest environmental disaster in U.S. history—and it doesn't look like it will get plugged any time soon. Louisiana is in a state of emergency as millions of gallons of oil have poured into the ocean since the Deepwater Horizon oil rig sank on April 22. Attempts of slowing down the oil flow have thus far been unsuccessful. The oil spill has hit Louisiana shores, threatening the environment and moving further down the coastline. Here is a collection of some tragic images of the Gulf oil spill shoreline damage from May 17th.