BP oil spill in 2010 left an oily bathtub ring on the sea floor the size of Rhode Island

Scientists have discovered yet another unforeseen effect of BP’s historic oil spill in the Gulf of Mexico: a 1,235-square-mile “bathub ring” of oil on the deep ocean’s floor.

Research published in the Proceedings of the National Academy of Science on Monday showed that approximately 10 million gallons of oil settled and coagulated on the floor of the Gulf near the Deepwater Horizon rig, which spilled a total of 172 million gallons of oil into the ocean in April 2010.

LINK (via:Think Progress)

BP disputes the claim.