Deep Sea Smoker (VIDEO) Duke University This video is under embargo. Please login to access this video. Caption Black smokers, such as these at a hydrothermal vent on the seafloor near the Cayman Islands, produce mineral-rich emissions that form deposits which may soon be mined for valuable minerals. Credit NOAA Office of Ocean Exploration Usage Restrictions Please Credit 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.