Houseboats are in use in one form or another all over the world, particularly in cultures that rely upon fishing or where land is scarse. In an era when the melting poles will be forcing pole shift survivors back from the coasts, increasingly creating new inland bays, having a floating home that can be moved along with the new shoreline is practical. Considering sea weed as a algae food source might be possible, and certainly fishing the oceans, which will be coming to your door, would be a possibility.
Offered by Nancy.