Funny to see that his idea wa snot original at all, but adapted from this. Still it is a fascinating story.

“Since diving is an everyday activity, the Bajau deliberately rupture their eardrums at an early age. “You bleed from your ears and nose, and you have to spend a week lying down because of the dizziness,” says Imran Lahassan, of the community of Torosiaje in North Sulawesi, Indonesia. “After that you can dive without pain.” Unsurprisingly, most older Bajau are hard of hearing. When diving, they wear hand-carved wooden goggles with glass lenses, hunting with spear guns fashioned from boat timber, tyre rubber and scrap metal.”

Diana Botutihe was born at sea. Now in her 50s, she has spent her entire life on boats that are typically just 5m long and 1.5m wide. She visits land only to trade fish for staples such as rice and water, and her boat is filled with the accoutrements of everyday living – jerry cans, blackened stockpots, plastic utensils, a kerosene lamp and a pair of pot plants.

Diana is one of the world’s last marine nomads; a member of the Bajau ethnic group, a Malay people who have lived at sea for centuries, plying a tract of ocean between the Philippines, Malaysia and Indonesia.

Is it really assumed that this is within the realm of general knowledge?