My understanding and again I am not an expert i ' m just a guy with his fingers up his arse is that the people killed by the Tsunami weren ' t people physically in seagoing waka but rather the people in the communities who made the seagoing waka . So what was eliminated were the communities that had the knowledge to make the seagoing waka . It was the elimination of these communities which caused the loss of seagoing waka knowledge . You could well be right about cyclones although in modern times these only seem to hit the north of the country though or it could be a combination of factors which may or may not include Tsunami . <| sep |> A WALL why did he not just build a fucking wall . I am not from that part of the world but this sounds iffy . By doing this he is basically ensuring the areas where it is cars only will be totally unprotected from fires , riots pissed off black people wanting a swim and just about every other modern day service we all know and love .