In March 2011, Japan was hit by the largest earthquake ever recorded.
It caused a tsunami–a huge wave that started out in the ocean. The tsunami swept onto the north-east coast of Japan and back into the sea, carrying away everything in its path.
Now, after travelling across the Pacific Ocean for more than a year, a soccer ball and a volleyball have washed up onto Middleton Island, off the coast of Alaska.
The man who found them plans to send them back to the two Japanese teenagers who lost them during the tsunami.
The balls were found two weeks apart and both balls had names on them. The soccer ball also had a school name and several messages.