A huge whirlpool traps a boat in a harbour near Oarai City, Ibaraki Prefecture, north eastern Japan. The vortex, which lasted several hours, formed as water drained away after the tsunami and channels on the sea bed created the spinning water
A demonstration of how the earth's soil reacts during an earthquake and how this reaction effects buildings and other structures. This would be a great visual for students to see before they research particular earthquakes or fault lines.
Weird lights in the sky 30 minutes before the 2008 Sichuan earthquake in China. Scientists from Quebec Ministry of Natural Resources and San Jose State University suggest that rocks under high stress deep underground emit light before an earthquake.