Grand Cayman Descent (IMAGE) California Academy of Sciences Caption A scientific diver descends into the twilight zone in Grand Cayman. Credit Luiz Rocha © 2016 California Academy of Sciences Usage Restrictions Photos for editorial use only. Photo credits are mandatory. Please contact firstname.lastname@example.org for non-editorial use and/or hi res. 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.