The Japan Meteorological Agency said a local tsunami of up to one metre (3.3 feet) could impact the Pacific coastline after the quake.
New evidence reveals that many tsunamis have flooded Alaska's islands and fjords in the past several thousand years
The tremor triggered waves of more than six feet.
A cave on the Indonesian island of Sumatra is providing a 'stunning' record of Indian Ocean tsunamis over thousands of years.
The fearsome aftermath of a tsunami striking California might cost at least $3.4 billion to repair.
New explorable images from the Japanese coast devastated by the 2011 tsunami have been posted online.
Radioactive water has leaked into the ocean from the damaged Fukushima nuclear facility. But that doesn't mean your sushi will glow in the dark.
Japan declared a radioactive water leak at the crippled Fukushima plant a level-three 'serious incident' Wednesday, its highest warning in two years.
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