Japan seabed shifted 24 metres after March quake

TOKYO - Last month's massive earthquake that devastated Japan's northeast shifted the seabed near the epicentre by 24 metres (79 ft), the coast guard said.
The 9.0 magnitude quake was one of the biggest ever recorded.
The movement is four times larger than any previous land shift recorded in Japan.
The largest quake in Japan's recorded history also elevated the seabed off the coast of Miyagi prefecture by 3 metres, the coast guard said on Wednesday.