Cultured pearl Cultured pearl A cultured pearl is a pearl created by an oyster farmer under controlled conditions. Cultured pearls can be farmed using two very different groups of bivalve mollusk: the freshwater river mussels, and the saltwater pearl oysters. A pearl is formed when the mantle tissue is injured by a parasite, an attack of a fish or another event that damages the external fragile rim of the shell of a mollusk shell bivalve or gastropod. In response, the mantle tissue of the mollusk secretes nacre into the pearl sac, a cyst that forms during the healing process. Chemically speaking, this
Consequences of the attack on Pearl Harbor into the war at a time when he had not yet acquired full control of continental Europe — on the very day of the Pearl Harbor attack, Hitler himself had issued his Nacht und Nebel decree, concerning the suppression of resistance activities within Nazi-occupied lands. Hitler, who had previously declared the Japanese "Honorary Aryans" claimed that "this is what happens when your allies are not Anglo-Saxons". However, he decided war with the United States was unavoidable, and the Pearl Harbor attack, the publication of Rainbow Five, and Roosevelt's post-Pearl Harbor address, which focused on European affairs as well as the