Amorphous creatures are creatures that lack a definite shape or form, such as amoebae. Amoebae are single-celled organisms that can change their shape and move around by extending and retracting pseudopods. They are found in aquatic environments and feed on bacteria and other small organisms. Amoebae reproduce asexually by dividing into two parts. They are an important part of the food chain and play a role in nutrient cycling.