Flutterby™! : DDT off Catalina Island

Fuuuuu. Scientists uncover startling concentrations of pure DDT along seafloor off L.A. coast

These revelations confirm some of the science community’s deepest concerns — and further complicate efforts to understand DDT’s toxic and insidious legacy in California. Public calls for action have intensified since The Times reported in 2020 that dichlorodiphenyltrichloroethane, banned in 1972, is still haunting the marine environment today. Significant amounts of DDT-related compounds continue to accumulate in California condors and local dolphin populations, and a recent study linked the presence of this once-popular pesticide to an aggressive cancer in sea lions.

University of California Santa Barbara Marine Science Institute — History of DDT Ocean Dumping off L.A. Coast Even Worse than Expected, EPA Finds

After an exhaustive historical investigation into the barrels of DDT waste reportedly dumped decades ago near Catalina Island, federal regulators concluded that the toxic pollution in the deep ocean could be far worse — and far more sweeping — than what scientists anticipated.

In internal memos made public recently, officials from the U.S. Environmental Protection Agency determined that acid waste from the nation’s largest manufacturer of DDT — a pesticide so powerful it poisoned birds and fish — had not been contained in hundreds of thousands of sealed barrels.