A new study published in Marine Pollution Bulletin shows that oil is still seeping from the wreck of the USS Arizona, more than 80 years after its sinking at Pearl Harbor. The study focuses on samples collected by the National Park Service in 2016 and 2018.

Researchers, led by the University of Houston and Woods Hole Oceanographic Institution (WHOI), analyzed oil samples collected from multiple leak points on the sunken battleship, using advanced molecular fingerprinting techniques. The results confirm the oil is a heavy fuel oil refined from California crude, consistent with U.S. Navy fueling practices in the early 1940s. Despite being underwater for decades, the oil retains high concentrations of polycyclic aromatic hydrocarbons (PAHs), compounds known for their persistence and potentia

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