• A tsunami is a series of waves with a long wavelength and period (time between crests). Time between crests
of the wave can vary from a few minutes to over an hour.
• Tsunamis are often incorrectly called tidal waves; they have no relation to the daily ocean tides.
• Tsunami (soo-NAH-mee) is a Japanese word meaning harbour wave.
• Tsunamis can occur at any time of day or night.