· Amoeba proteus is the most common species of Amoeba. · Amoeba proteus (Gr. Amoeba - change; proteus = mythical sea god who could change shape) is regarded as one of the lowest forms of life. It is versatile in comparison to other organisms. It lives in freshwater, moist soil, or the sea. · Amoeba proteus: Freshwater Amoeba · Amoeba verrucosa : Freshwater Amoeba · Amoeba limax: Marine water Amoeba · Amoeba terrestis : Muddy water Amoeba General morphology · Microscopic; unicellular, acellular or non-cellular and without fixed body shape (irregular). i.e. Amoeba has no skeleton. · The outermost covering of the body is the plasma membrane called plasmalemma. It is very thin and selectively permeable. · Plasmalemma is excretory (ammonia diffuses out through it), respiratory (diffusion of oxygen and carbon dioxide occurs through it), and protective in nature. · Inside plasmalemma, there is a dense mass of ...