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What’s Causing Eerie Halos Around Barrels on Ocean Floor?

A recent study provides hints into their toxic contents, but UC Santa Barbara’s David Valentine is “not entirely sold that they really know what's in the barrels.”

What’s Causing Eerie Halos Around Barrels on Ocean Floor?

[Updated: Thu., Oct. 9, 2025, 1:21pm]

Scientists just revealed new information about the eerie, leaky barrels abandoned along the seafloor off the coast of Los Angeles that could provide hints into their toxic contents.

David Valentine , a professor at UC Santa Barbara, discovered the barrels back in 2011. They were everywhere — buried in the sand with pale, crusty, alien-looking halos baked into the surrounding sediment.