Fourteen divers were trained in basic and advanced scientific diving techniques at the National Centers for Coastal Ocean Science Kasitsna Bay Laboratory from 10-17 March 2012 in a class run by the University of Alaska Fairbanks. Diving is a key tool for near-shore marine research and the Kasitsna Bay Laboratory course provides hands-on training in underwater research techniques and dry suit diving in cold water. A foot of new snow, floating bits of ice and night dives helped enhance the cold-water training experience. Students obtained PADI Research Diver Specialty, CPR and first aid certifications and completed research projects that support NOAA's coastal ecosystem science missions. Over 200 scientific divers have been trained at Kasitsna Bay, providing a scientific workforce for NOAA and other agencies, tribal organizations, universities and private industry.