Lloyd Godson wants to prove people can live underwater. After winning the Australia Geographic “Live Your Dream” Wildest Adventure Competition for his plan in 2005, the marine biologist plans to dive to the bottom of a pond near Albury, Australia later today and stay there for two weeks (http://www.biosub.com.au/).

Of course, he’s taking plenty of technology with him. Rusty, his trusty airtight biosub made of scrap metal, has already made the trip “Down Under” and awaits him. He will live with a bioreactor-full of algae, which will breathe Mr. Godson’s carbon dioxide and provide him with oxygen. (He’ll also have a backup air compressor, just in case.) For drinkable water, he’ll rely on Air2Water’s technology to extract water from the air and reduce humidity at the same time. The M18 device has just been released, and Mr. Godson will be testing a new M18 Marine version—meant for boats—in the extra-humid environment. (He’s not bringing extra water with him.)

Among a number of other technologies he’ll use inside Rusty, Mr. Godson will use an EFOY fuel cell from Smart Fuel Cell, a solar-power system from Solarco Albury, a waterproof communication system from OTB Products, and a gas detector from Draeger Safety Pacific (to monitor the air inside Rusty). He also will be teaching virtual classes for the South Australian Department of Education and Children’s Services using distance-learning software from Saba.

Mr. Godson had hoped to be able to use technology from Like-A-Fish Technologies’ that would extract air from the surrounding water, and Fluorosolar Systems’ technology to pipe sunlight into the biosub, but the products weren’t ready on time, he says. Still, he says, the point of the experiment is to show that habitats don’t have to be as high-tech as NASA’s to survive underwater. “It’s just showing that someone can have a go at living underwater, and that it might be possible in the future, if you can show it can be done very cheaply and easily,” he said in an interview Friday. “I think it might happen sooner than people think.”

Does he think people will soon have to live underwater? Not really. “It’s more a dream of mine to have a go at living underwater,” Mr. Godman says. “The idea of it really is to share the whole process and take people on the journey from the start to the end.