The 2010 Deepwater Horizon spill was a catastrophic oil spill in the Gulf of Mexico caused by an explosion on the Deepwater Horizon oil rig.

The Deepwater Horizon oil leak also referred to as the BP oil spill, happened on April 20, 2010, when a BP-operated offshore drilling rig burst, causing a significant blowout. It was the biggest maritime oil disaster in history, spilling around 4.9 million barrels of oil into the Gulf of Mexico over 87 days. The catastrophe severely damaged the environment, impacting coastal ecosystems, marine life, and local economies that depend on tourism and fishing. Additionally, it caused BP to face serious legal and financial repercussions and sparked changes to offshore drilling laws.