Did ancient Japanese come to America in 3500 BC? Some archeologists think so. Have a listen to this story of ancient sailors, who may have crossed the biggest body of water in this world, and also an adventure of a modern day professor and environmentalist,  who made a similar modern day adventure at sea. 

Links: 

Boatbuilding Website: http://spirainternational.com/
Boat Building and Builders Facebook Group: https://www.facebook.com/groups/935360056515962
Instagram: https://www.instagram.com/spiraboats/