But still much about the deep sea remains uncertain ... Halley patented a diving bell with a pipe which guided air to the diver. Then, in 1827, the first functioning diving suit was invented.

including completing the 2002 London Marathon in the deep-sea diving suit. The former professional goalkeeper and firefighter can only see a few feet in front of each step as his helmet prevents ...

including completing the 2002 London Marathon in the deep-sea diving suit. His pace meant he had to camp overnight with each ascent taking place over two days. He has been consuming in excess of ...