There’s a long history in Japan of female pearl divers who start…

There’s a long history in Japan of female pearl divers who start diving at the age of 12-13 and are active well into their 70s. They’re known as “ama” (which means “sea woman”). They endure freezing conditions and great pressure from deep-sea depths to get pearls, and they have a unique technique in which they release air in a long whistle as they resurface.