Australian Lives under water for 12 days

An Australian scientist, Lloyd Godson, lived for 12 days in a sealed chamber under water. The chamber was only nine square meters wide. All the oxygen he needed for the entire time was generated by an Israeli-developed "Biocoil" system using algae. He generated his own electricity using an exercise bike. His goal was to prove that a closed ecological system is practical. Pretty cool. I could see something like this being used in trips in space, or in long term underwater research stations.

Via PhysOrg: Aussie boffin lives 12 days underwater on algae-generated oxygen

His official Site: The BioSUB Project