Trochus niloticus Directory References Discover Nostradamus and His Prophecies How Many Countries Are There in the World? Is Australia an Island? 5 Unbelievable Facts About Christopher Columbus Which Religion Is the Oldest? 7 of the World’s Most Dangerous Lizards and Turtles Why Is the Mona Lisa So Famous? Contents Ask the Chatbot a Question Trochus niloticus snail Ask the Chatbot a Question Learn about this topic in these articles:description In top shellThe largest species, Trochus niloticus, from the Indo-Pacific region, was, in fact, once extensively fished for its lustrous mother-of-pearl layer, which was used in the manufacture of pearl buttons.Read More Britannica ChatbotChatbot answers are created from Britannica articles using AI. This is a beta feature. AI answers may contain errors. Please verify important information using Britannica articles. About Britannica AI.