I am doing a short project for a class that I am taking which discusses the pipi of Hawai'i. In this case, pipi doesn't refer to the golden pearls of the Cook Islands, but rather the "pearl oysters" of the 'Ewa region of O'ahu (Pearl Harbor). I want to include a brief description of P. radiata, and I am having a remarkably difficult time googling general information about the creature- even Wikipedia ignores it. I can find metal pollution monitoring studies and farming information, but not any basic information about its physical characteristics and biology. Similarly, a search of this forum didn't really have anything about the organism itself. I do have a copy of the book "Pearls of Pearl Harbor" and while there is a good amount of historical information, all it says about P. radiata is that it produced very small pearls and that the shell is gray with alternating bands of darker gray and white. That's a start, but I'd like to give a little more information than that. I'd appreciate any help you can give!