Charlotte Amalie, UNITED STATES VIRGIN ISLANDS
A small piece of Dengrogyra cylindrus pulls it's polyps in as it rests on a tile to be watched in a lab...
A small piece of Dengrogyra cylindrus pulls it's polyps in as it rests on a tile to be watched in a lab setting, the species is extremely susceptible to Stony Coral Tissue Loss Disease (SCTLD) at the University of the Virgin Islands campus in St Thomas in the U.S. Virgin Islands, May 17, 2019. REUTERS/Lucas Jackson
