The massive 9.0 earthquake created a bunch of debris and the ensuing wave washed a lot of it out to sea. Here's how it is expected to travel.
The International Pacific Research Center has created a model of how the debris is expected to travel, to aid in tracking it and cleaning it up. The first wave of debris is predicted to hit Hawaii within a year. Then it will hit Vancouver and the rest of the west coast of North America, before heading back to Hawaii.
You can see an animation of the predicted path of the debris at the International Pacific Research Center site.
Sigh. The good people at the 5 Gyres project have their work cut out for them.