Subscribe | UPI Odd Newsletter Subscribe SAN FRANCISCO, Sept. 17 (UPI) -- The Guinness Book of Records has recognized a one-day trash collection by volunteers in California as the largest of its kind in history. The statewide volunteer effort Saturday saw an estimated 800,000 pounds of trash collected from over 750 sites in California, the San Francisco Chronicle reported. Advertisement The event was coordinated with an effort to help remove garbage from the world's seas by the Ocean Conservancy. Environmental experts said the record-setting outing was only the beginning. "The trash collected on Coastal Cleanup Day is just the tip of the iceberg," David Lewis, one of the heads of Save the Bay, told the paper. "It's one day, and trash is flowing into the bay every day. We're getting just a fraction of what's out there."