@Lynsey [Midoki] I believe the Shimmering Pearl sources are mislabelled (in English at least). The sources are Eastern Merchant Ship, Giant Enemy Crab, and Merchant Ship. The "Eastern Merchant Ship" should be "Imperial Ship"? I can't find any ship labeled "Eastern Merchant Ship." That said I can't confirm Imperial Ship delivers Pearls despite hitting them for a week now; probably just random bad luck but perhaps the label is incorrect on the Imperial Ship delivering them?