A Fiddler Crab (<i>Uca stenodactylu</i>) (IMAGE) University of Bristol Caption Fiddler crabs (Uca stenodactylu) use polarization vision to sense the approach of rivals, scientists at the University of Bristol, UK have found. The research, carried out in Panama, is the first field-based evidence that animals use polarization vision to enhance the detection of objects. Credit Dr Martin How Usage Restrictions Image is for single use only to illustrate articles on the <i>Current Biology</i> paper 'Target Detection Is Enhanced by Polarization Vision in a Fiddler Crab by How et al and is not to be archived. Please credit the copyright holder Dr Mrtin How License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.