Whole Pacific Plate appears to be shaking.

The entire Pacific Plate appears to have been disturbed by the 9.0 Earthquake Japan experienced. The result from this 9.0 earthquake is increased activity in the west coast of South and North America, Alaska to Japan to the Philippines, then Papua New Guinea, even down into the 'Southern East Pacific Rise'.

Below is a real-time earthquake map. If you are able to draw a ring connecting all those squares around the Pacific, you have found the Pacific Plate.