It's been said that the night skies are the other half of the National Park System. Well, maybe it should be viewed as one "third," with another third being the surface of the park system and another the underwater resources.
Figuring out how the human body can withstand underwater pressure has been a problem for over a century, but a ragtag band of divers are experimenting with hydrogen to find out.
Technically Speaking is the latest book from leading diving author SIMON PRIDMORE, and it's an entertaining and informative must-read for any diver who wants
At the bottom of the biggest underwater cave in the world, diving deeper than almost anyone had ever gone, Dave Shaw found the body of a young man who had disappeared ten years earlier. What happened after Shaw promised to go back is nearly unbelievable—unless you believe in ghosts.