Sunday marks the one-year anniversary of the huge 8.9 earthquake that rocked Japan and triggered a devastating tsunami that washed away entire villages.

Nearly 20,000 people lost their lives.

More than 1,500 children lost one or both parents in the disaster - and they're still struggling to come to grips with what happened that awful day.

What we see of the tsunami's effects is horrific. What we can't see can be just as devastating.