Vampyrella Amoeba Eating Spirogyra Time-lapse light microscopy footage of a Vampyrella lateritia trophozoite (center) attached to and feeding on a strand of Spirogyra algae (tubular). Vampyrella is a unicellular micro-organism sometimes described as a "vampire amoeba". It attacks other microscopic organisms, such as algae, and penetrates their cell walls and extracts the contents (green). The complete process of cell wall penetration, suction and extraction is shown in this clip. Vampyrella are