>> we hope to create a global snapshop of the most common items populating our beaches. the top ten are made of plastics. unfortunately, the same type of items we use in our every day lives. cigarette tops, bottles, and inspiring change in people's behaviors and use that information to drive policy change at the state, national and international level. >> reporter: here in santa monica, we actually saw so much trash picked up. you wouldn't think of it. one of the most beautiful places here in california. we were told in 100 yards of this beach nearly 1,000 pounds of trash were picked um this morning. >> oh, my gosh. wild to think about. been to that beach. absolutely beautiful and seems clean when there. you wouldn't imagine. we watched the protest yesterday and saw all the school kids, millions taking to the streets