Tsunamis - Photo Gallery Tsunamis National Geographic - They're rare events, occurring on average about twice a year somewhere in the world — about once every 15 years for the most destructive.
Tsunamis - Photo Gallery Tsunamis National Geographic - They're rare events, occurring on …
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Tsunamis - Photo Gallery Tsunamis National Geographic - They're rare events, occurring on average about twice a year somewhere in the world — about once every 15 years for the most destructive.