👉 Lophobranchii is a genus of marine gastropod mollusks in the family Lophobranchidae. They are known for their large size, with males reaching up to 10 inches long and females larger than this. These creatures are primarily found in the warm waters of the Indian Ocean, Pacific Ocean, and Atlantic Ocean. Their shells are composed of a tough exoskeleton made of calcium carbonate, and they have a unique pattern of ridges on their