A plastic cube from Japan recently washed ashore in Hawaii. It is the first known piece of debris to wash ashore in Hawaii from the tsunami that rocked Japan in 2011. A four-foot cube plastic bin is the first confirmed piece of Japanese tsunami debris to wash ashore in Hawaii, officials from the state said. The large plastic bin was found floating in the ocean near Waimanalo, Oahu on 18 September. Officials were able to confirm the bin belonged to YK Suisan and was lost during the March 2011 tsunami. There might be as much as 2 million tons of debris floating in the Pacific Ocean from the tsunami with the bulk of it expected to wash ashore starting in 2013.