From Youtube
Seventy miles off the coast of mainland Japan is the small island of Okinawa, home to some of the most unique seaweed in the world. Mozuku is a rare underwater delicacy found off the mainland coast. Each fall, farmer Tadashi Oshiro uses a special technique to sustainably harvest the seaweed. His one-of-a-kind farming methods were passed down to him by his father, using a process that allows the mozuku to grow without creating additional waste.
