Negative Phototaxis

While many organisms need light to survive, certain animal that live in dark environments need to avoid light because it threatens their survival. When exposed to light from the Sun or another source, these animals move away from the light, seeking darkness. This movement pattern is called negative phototaxis. Negative phototaxis allows animals to avoid the dangerous effects of being exposed to light. In order to be able to move away from light, these animals often have special physical features that all them to sense the presence of light, since they live in the dark and may not have fully developed vision.