Two tank dive = two one-tank dives.
Cyberdiver = one who spends too much time here.
The other spelling: Jon line = http://www.scubatoys.com/store/detail.asp?product_id=DiveRiteJonLine
Cyberdiver = one who spends too much time here.
The other spelling: Jon line = http://www.scubatoys.com/store/detail.asp?product_id=DiveRiteJonLine