Nearly 10 years after the Deepwater Horizon oil spill (, a study suggests “invisible and toxic oil” made the spill much worse than some experts have estimated.


The 2010 oil spill, considered one of the worst environmental disasters in US history, was triggered by an explosion on the BP-contracted Transocean Ltd. Deepwater Horizon rig that killed 11 workers on board and released approximately 168 million gallons of oil in the Gulf of Mexico.  (

The spill was about 30% larger than estimated. It reached the Texas shore, the Florida Keys, the coast of Tampa and parts of the east coast of Florida, according to the study.


At some point, 88,522 square miles of the Gulf of Mexico were closed to fishing because of the spill, according to a federal report on the oil spill.