👉 Atyoidea is a group of marine invertebrates that belong to the class Annelida, which includes a wide range of animals found in oceans and seas. These creatures are characterized by their cephalopods, which are soft-bodied, segmented animals with a long snout and a pair of large eyes located on the top of each shell. They have a variety of shapes, sizes, and colors, as well as a diverse array of behaviors, including swimming, diving, and for