Summary of “Bodies Remodeled for a Life at Sea”

Bajau divers been observed plunging more than 200 feet underwater, their only protection a pair of wooden goggles – a physiological marvel.
In 2015, Melissa Ilardo, then a graduate student in genetics at the University of Copenhagen, heard about the Bajau.
Dr. Ilardo scanned the abdomens of the Bajau villagers and then traveled about 15 miles inland to a village occupied by farmers known as the Saluan.
On her visit to Sulawesi, Dr. Ilardo also took mouth swabs from the Bajau and Saluan from which she extracted DNA. She looked at the genetic variations in each village and compared them to people from neighboring countries, such as New Guinea and China.
For her own part, Dr. Ilardo suspects that natural selection favored the Bajau variant of PDE10A because deep diving is so risky.
Some researchers suspect the Bajau only began diving to great depths when a market for sea cucumbers opened up in China in the 1600s.
Dr. Ilardo said there were likely a number of other genes that help the Bajau dive.
To see if that’s the case with the Bajau, Dr. Ilardo will need to take another trip to beautiful Sulawesi.

The orginal article.