How to Get to the Seafloor Without Holding Your Breath [Design]
Before we had ALVIN—or proper submarines for that matter—the best way to get to the seafloor was by using a diving bell. Originally made from recycled church bells, these diving apparatuses protected their passengers from the murky depths in a bubble of air. Our friends at Oobject have assembled nine of the best. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/JYrbLGiprig/