THE COVERS Articles & Editorials JANUARY 2003 • Volume 13, Number 1 
  
By Barry and Ruth Guimbellot
Many divers have been mesmerized by wall diving - hundreds, even thousands, of feet of vertical wall, blanketed with coral and sponges. And beyond the wall, an endless expanse of shimmering blue. In this month's cover feature, "Off the Wall: The Thrill of Wall Diving," the author takes a look at the thrills - and skills - involved in wall diving.
FEATURES
30. Off The Wall: The Thrill of Wall Diving
When you are referred to as being off the wall, it doesn't necessarily carry positive connotations. But to scuba divers who have descended over the sheer vertical facades that surround the world's landmasses - from the largest continents to the tiniest islands - being off the wall is a sensation like no other.
By Lynn Laymon
40. A Brief History of Diving, Part Two: Evolution of the Self-Contained Diver
Last month we began our examination of the history of diving by tracing the exploits of free divers from ancient times through the Middle Ages. We also took a look at how diving technology advanced from the Renaissance through the 19th century. This month we explore the evolution of self-contained diving systems and related equipment that made the diving experience what it is today.
By Alex Brylske
50. Links in the Chain: Training is the Key to Avoiding Accidents
Any time a diver plans a dive, he must exercise his judgment, taking into consideration three primary factors: his equipment, his skills, and the environment in which he plans to dive. If his assessment of any of these factors is flawed, so will be his judgment. The author takes a holistic look at how divers can avoid accidents.
By Robert N. Rossier
COMMENTARY
8 Editorial: The Weakest Link By Alex Brylske
10 Buddy Lines: C-cards with Expiration Dates?  
18 Dive Observer: Artifacts Recovered from Turret of Historic Vessel and other news from the diving industry By Gene Gentrup
99 No Dumb Questions: Nitrogen, Ear Pain and Recertification
Questions from our readers
By Alex Brylske
DIVE EXPLORATION
74 Global Dive Exploration Map: A geographical guide to great dive destinations across the globe  
76 Dive Geo: Diving Down Under: Australia's Coral Sea: Exploring the land of the Great Barrier Reef By David Prichard
85 Dive Traveler: Traveling in Comfort: Airport Security in the Post 9-11 Era. How air travel has changed - and improved By Robert N. Rossier
89 Diving USA: Dive travel opportunities across America  
90 Passport/Travel Briefings: Dive travel deals and updates from all over
Compiled by Gene Gentrup
 
EVERY MONTH
61 Scuba Skills: The Giant Stride Entry: The Skill is in the Name. It's as easy as taking a step By Linda Lee Walden
65 Instructor Tips: "Advanced" Breathing: The Nuts and Bolts of Teaching Nitrox. What your students need to know about enriched air By Jeff Myers
69 Always Learning: Smooth Operators: Answering the "How" of Getting to the Dive Site. The nuances of selecting a dive charter By Mark Twombly
92 Dive Shop: New products from the dive industry
Compiled by Cathryn Castle
 
94 Next Step: Gearing Up for Technical Diving: The Back-Flotation BC. Tips for selecting a back-mount BC By Jan Neal
104 What's That?: A Peek Under the Shell: Sea Turtle Secrets Revealed. Their habitat and habits examined By Marty Snyderman
107 Premier Classifieds  
109 Dive Training Classifieds  
113 Dive Training Quiz : Test your knowledge of the information in this month's issue  
114 Final Check: What It Looks Like When... Your Air Is Not Turned On. You won't last long down there without it By Linda Lee Walden