April Fools' Day -- Harbor at Hilo -- Deadly history -- Tsunami science -- Sound the warning -- Further information.
April Fools' Day, 1946: a sunny Hawaiian school day that started out as any other--until the ocean began to pull back, exposing the sea floor. Suddenly, someone looked up: now a wall of water was racing toward them. This was no April Fool's joke--it was a deadly tsunami. Learn about this and other tsunamis from history.