Polynesians may not have had a lot of technology but they knew the sea. I’ve seen photos of maps they made out of reeds and grass that show detailed wave and wind patterns as well as islands.
As I understand it, people with expert knowledge of the sea can tell if they’re approaching an unseen island by the behavior of swells.
wow. This is all pretty interesting in an esoteric way.
PS- What does esoteric mean?
:p