Guy travels 100 nautical miles in a pedal powered submarine
9 Groundbreaking Early Submarines - HISTORY
US$70,000 pedal-powered submarine for two
Pedal-powered submarine takes to the air | road.cc
The Preposterous World of Human-Powered Submarine Racing
Stephane Rousson (bottom), chief designer of the Scubster submarine, a pedal -powered personal wet sub, is seen during testing as man on a bicycle fix to inflatable tubes looks on in Villefranche sur
Scubster Nemo and Pub Wet Submarine - MySubmarines