Dramatic visuals show how Tsunami panic unfolded after 'one of the biggest ever' earthquakes struck about 84 miles east-southeast of Russia's Kamchatska.

Russia said the temblor off the Kamchatka peninsula was ‘the strongest in decades’.

The Japan Weather Agency said it expected a tsunami of up to 1 metre (3.3 feet) to reach large coastal areas starting around 0100 GMT.