Jules Verne

“ In Panama they make just $1.00 per week. In most places they earn only a penny for each oyster that has a pearl, and they bring up so many that have none!"
"Only one penny to those poor people who make their employers rich! That's atrocious!"
"On that note, professor," Captain Nemo told me, "you and your companions will visit the Mannar oysterbank, and if by chance some eager fisherman arrives early, well, we can watch him at work."
"That suits me, captain."
"By the way, Professor Aronnax, you aren't afraid of sharks, are you?"
"Sharks?" I exclaimed. ”

“ Either they stick to the oyster's shell, or they become embedded in the creature's folds. On the valves a pearl sticks fast; on the flesh it lies loose. But its nucleus is always some small, hard object, say a sterile egg or a grain of sand, around which the mother–of–pearl is deposited in thin, concentric layers over several years in succession."
"Can one find several pearls in the same oyster?" Conseil asked.
"Yes, my boy. There are some shellfish that turn into real jewel coffers. They even mention one oyster, about which I remain dubious, that supposedly contained at least 150 sharks." ”

“ I believe the average time underwater that these fishermen can tolerate is thirty seconds, during which they hastily stuff their little nets with all the pearl oysters they can tear loose. But these fishermen generally don't live to advanced age: their vision weakens, ulcers break out on their eyes, sores form on their bodies, and some are even stricken with apoplexy on the ocean floor. ”

“ But to roam the bottom of the sea when you're almost certain to meet man–eaters in the neighborhood, that's another story! I know that in certain countries, particularly the Andaman Islands, Negroes don't hesitate to attack sharks, dagger in one hand and noose in the other; but I also know that many who face those fearsome animals don't come back alive. ”

“ The finest pearls are called virgin pearls, or paragons; they form in isolation within the mollusk's tissue. They're white, often opaque but sometimes of opalescent transparency, and usually spherical or pear–shaped. ”