Mollusks make up a massive group of invertebrates that includes snails, clams, octopuses and more, with researchers regularly adding new species — living and extinct. At Live Science, you can find awesome mollusk facts and findings with the latest news, features and articles from our expert writers and editors, including stories about a micro mollusk breaking the record for world's tiniest snail, why a "hat"-wearing ancient slug may explain the mollusk family tree and the discovery of a weird sea mollusk sporting hundreds of armored eyes.