Underwater classroom: professors to spend 73 days below sea surface – video

Bruce Cantrell, 63, and Jessica Fain, 25, are attempting to break the world record for time spent underwater by living in an ocean laboratory for 73 days. The pair, who are academics at Roane State Community College, will live under the sea in Key Largo, Florida. The pair begin their attempt on Friday and will have weekly guests, including former astronaut Buzz Aldrin