Subsea Oil Leak An oil spill leak under the ocean, especially from a subsea well, is a complex and hazardous event. Unlike surface spills, these leaks occur deep underwater, making them harder to detect, contain, and stop. Subsea Oil Leak It’s an uncontrolled release of oil from a well, pipeline, or equipment located on the seabed—sometimes thousands of meters below the surface. These leaks can continue for days or even months before being contained, depending on the depth and severity. Causes o