Five years after the April 2010 BP/Deepwater Horizon oil spill in the Gulf of Mexico, the Gulf ecosystem remains profoundly disturbed, a report from the National Wildlife Federation finds. The report, Five Years & Counting: Gulf Wildlife in the Aftermath of the Deepwater Horizon Disaster (29 pages, PDF), found that between 80,000 and 600,000 barrels of oil remain trapped in ocean floor sediment across a 1,200-square-mile area, coastal marshes have been lost, and wetlands have suffered serious erosion. The report also found that, among the many species affected by the spill, bottlenose dolphins were found dead along the Louisiana coast at four times the normal rate in 2014; that between 27,000 and 65,000 Kemp's ridley sea turtles are estimated to have died in 2010, the year of the spill, and that the number of nests has declined in every year since; and that 12 percent of the brown pelican population and 32 percent of the laughing gulls in the northern Gulf are estimated to have died as a result of the spill. Among other things, the report calls on the Department of Justice must to hold the parties responsible for the  spill fully accountable for their violations of federal environmental laws, including the Clean Water Act and the Oil Pollution Act.