Pumice stones spewed from an undersea volcano ... said Nov. 16 that its latest computer simulation indicated that the floating volcanic stones will first pass along the coasts of the Tokai and ...

The pyroclastic igneous rocks have turned into pebbles after floating on water and rubbing against one another for two months or so. Banks of pumice have covered the surface of the sea along the ...

Sailors have been warned to stay clear of the potential hazard. Pumice is a lightweight, bubble-rich rock that can float in water. It is produced when lava goes through rapid cooling and loss of ...