Tsunami debris will drift to West Coast

I remember one bad thing in my hometown when I was child. 1999 my hometown has a big earthquake,so I totally understand about eartyquake. Last month TOKYO has a "9.0" degree earthquake. A lof of people suddenly lose their home and familes and I saw terrible things like tsunami or many bullings collapse on the ground.Therefore, big tsunami bring many debris to West Coast. It was terrible. I think some debris might be contain a few radiation. This will change some marine ecosystem of radiation in the future.