Pearl divers hold their breath for long periods of time. The women were the one's that really did pearl diving back then. Ancient Rome pearls were symbols of wealth and social standing. Women has a lot more capacity and also pick more pearls in one dive. The size of South Sea pearls range from 10 to 20 millimeters, but pearls larger than 16 millimeters are rare. The land was too barren to allow any farming and the people were generally too concerned with finding water, food and other provisions to consider trying to make money.
There is evidence of a single pearl being sold for fifteen thousand pounds during the 1920s equivalent to more than three hundred and fifty thousand pounds.

Japan info

Japan 162 volcanoes they have a population of a 126 million. The five main island Honshu, Kyushu, Shikoku, Hokkaido, and Okinawa. A lot of the Japanese study English many hesitate to speak English, but Japanese understood more English then Americans gave credit for. The Japanese consider it inappropriate to show affection in public. The average female marries at age 24 and the average male at age 27. In a lot of homes and restaurants, you have to remove your shoes before entering the room. Japanese say the Chinese will eat anything. Japan mainly eats squid, octopus, eel, and more. Japanese breakfast consists rice topped with natto. Japanese people cant dive all that well. Approximately 85% of Japanese people have never tasted turkey. Japan has about 1,500 earthquakes each year. Japan has about three minor earthquakes every day of the year. Japan does have severe earthquakes too, such as the Great Kanto Earthquake that shook the country in 1923.