Slide organisms, also known as amoebae (7 letters), are single-celled organisms that move by extending and retracting pseudopods. They are found in a variety of habitats, including freshwater, soil, and marine environments. Amoebae are classified as protists, which are eukaryotic organisms that lack the characteristics of plants, animals, and fungi. They are capable of changing shape and size, and they feed on bacteria and other small organisms.