There's been another earthquake in Japan overnight, just off the North East coast.
The earthquake had a magnitude of around 6.5.
People living in the Miyagi area were warned that it could cause another smaller tsunami, but so far there doesn't seem to have been much damage.
Meanwhile, officials say reports of dangerous radiation levels at the damaged Fukushima nuclear power station were wrong.
Workers had been told to leave because radiation levels ten million times higher than allowed were detected but they've now gone back to carry on trying to make the plant safe.