Deepwater Horizon oil spill leaves long-term effects

Volunteers wash oil from a brown pelican affected by the Deepwater Horizon oil spill in April 2010. The incident has left long-lasting impact on wildlife. Photo: TNS

Oil spill caused lasting damage to wildlife and ecosystems.

Dolphins are dying in unusually high numbers. Sea turtle nests are declining. Tuna are developing abnormally. And pelicans and gulls are suffering from the lasting effects of a massive oil spill in the Gulf of Mexico five years ago, the US National Wildlife Federation warned in a recently released report.