and identity. >> nainoa: the success was monumental. it changed worldview. that our ancestors were powerful, they were extraordinarily intelligent. they were courageous, and they were skilled. and so we come from them. >> anthony: thompson is a legendary water man. he's continued to sail on hokulea's missions. native hawaiian, his roots in this valley go back 200 years. >> nainoa: my grandfather was born here. so i grew up milking cows here with my grandfather. >> anthony: he spent many years learning traditional polynesian navigation techniques from a master. mau piailug, of the small micronesian island of satawan. >> nainoa: this is a man that was chosen by his grandfather. at one year old he was put into tide pools to be trained, and learning the wind and the water.