Camouflage (IMAGE) University of California - San Diego Caption A light adapted tadpole is harder to see against pale sand compared to its dark sibling. Credit Norma Velazquez Ulloa, Armando de la Torre and Krista Todd. Usage Restrictions none 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.