Three and a half tons of marijuana were found by a boater floating in the ocean off Southern California.

A boater spotted the 160 bales of pot at about noon Sunday. Orange County authorities and the Coast Guard sent boats to gather up the pot and turn it over to the U.S. Border Patrol, The Associated Press reported.

It's unclear who dumped the marijuana, which weighs about 7,000 pounds and has an estimated street value of $3 million, according to the AP.

Border Patrol spokesman Jerry Conlin told The Huffington Post that the discovery was "not normal" because officials didn't see a boat or high-speed chase near the abandoned bales.

"To find that much out there floating in the water is not normal," he said. "There have been no arrests made at this moment, and there's no vessel that's been seized. It is an ongoing investigation."