👉 A phanpsyche is a type of worm that lives in the digestive system of certain animals, particularly in crustaceans and gastropod mollusks. These worms have a segmented body with two sets of arms called pectinate arms and chitin arms, which are used for attachment to the animal's gut. Their primary function is to break down organic matter by breaking down proteins and other materials into simpler compounds that can be absorbed by the animal.