http://www.pbs.org/newshour/rundown/2012/03/tracking-japans-tsunami-debris.html ~ coming from the other end of the Old World watch these various debris field movements from the Fukushima Tsunami ~ see how easy it is to ‘splain both the Haida and Tlingit Indians ~ and Japanese settlers in Central America. Now, imagine the same thing happening in the Atlantic in the Azores on a recurring basis. Nobody at all really has to walk!
Being stranded on floating debris, traveling across the pacific ocean. That would make an incredible book or movie.