We extracted Daphnia magma from an open container environment. The Daphnia that where used measured 4-5 millimeters is length from head to tail. To set up the experiment, a clear acrylic 30 X 2 centimeters (cm) mesocosm was as our testing environment. The mesocosm was washed out with warm water before being filled with purified water until it is 3-4 cm away from the top and 10 Daphnia were added to the tube and then a cork was added. A line was drawn at 10 centimeters from the cork at one end and this was the counting area while the rest of the tube was covered with a black felt. The mesocosm was placed in a ring stand clamp and secured with a clamp horizontally to correctly evaluate phototaxis in the environment. A dissection light which