Pearl with a mother of pearl bead center. In the cultured pearl industry, the resources used to create a mistaken all nacre baroque pearl is a drain on the production of round cultured pearls. Therefore, they are trying to improve culturing technique so that keshi pearls do not occur. All nacre pearls may one day be limited to natural found pearls. Today many "keshi" pearls are actually intentional, with post-harvest shells returned to the water to regenerate a pearl in the existing pearl sac. Tahitian pearls, frequently referred to as black pearls, are highly valued because of their rarity; the culturing
Pearl Krabs Grandma's Apron, a store for elderly residents on the ground floor of the shopping center. Beatrice, her boss at Grandma's Apron, is voiced by actress Betty White. The disparity in species between Pearl and her father has never been explained directly in an episode, but merchandise makers and production crew members have stated that Mr. Krabs was once married to a whale who gave birth to Pearl. A trivia book penned by former "SpongeBob" writer David Fain in 2000 states that Pearl "takes after her mother," implying that she is the biological offspring of Mr. Krabs and a whale. According