👉 Acrolithus is a type of crustacean, commonly known as a shrimp or lobster. They are small and typically have short, pointed legs that they use for crawling and swimming. The body of an acrolithus can be up to 10 inches long and weigh around 25-40 pounds. Acrolithus is a popular seafood delicacy in many parts of the world due to their unique characteristics and flavor profile.