JANUARY 2002 • Volume 12, NO. 1

THE COVERS	Articles & Editorials	JANUARY 2002 • Volume 12, NO. 1
By Tanya Burnett and Kevin Palmer	Entering the water at dusk allows the night diver time to adjust to the growing darkness. Another advantage: daytime creatures are heading for cover, while nocturnal creatures are just preparing to venture out. Being underwater during the "shift change" increases your chances of finding interesting photo subjects.

FEATURES

28.	Expedition Diving: It's Not Your Average Dive Trip For some divers, every dive is an expedition dive. After all, there’s something new to discover on every plunge below the surface. Expedition dive trips can involve an array of activities including treasure hunting, archaeology, wreck exploration, fossil hunting, scientific research,or simply probing unexplored reefs.	By Jesse Cancelmo
38.	Setting the Record Straight: The Truth About Diver Damage to Coral Reefs Scuba diving and coral reefs are about as well-associated as baseball and hot dogs, so it's easy to conclude that we're major culprits in reef demise. But there's one fundamental problem with this argument: It's simply not true. Any review of the scientific literature on coral reef degradation will reveal that the problem of direct damage from diving and related activities is not a major factor.	By Alex Brylske
50.	Are Your Scuba Manners Up to Par? Don't consult your Emily Post; you won't find a section on dive boat etiquette. Unlike the traditional rules for formal entertaining, there's no handy reference guide to help those new to charter boat diving avoid embarrassing faux pas. With this in mind, the author offers some guidelines for proper charter boat diving etiquette.	By Linda Lee Walden
60.	How Much Air is In That Thing? Understanding Tank Capacities Knowing what affects a scuba cylinder’s volume — and being able to predict your air consumption rate — will go a long way toward making your diving safer and more enjoyable.	By Joseph C. Dovala

COMMENTARY

8	Editorial: Stress Can't Swim	By Alex Brylske
10	Buddy Lines: Constructive Criticism
18	Dive Observer: Eco-tourism On the World Stage and other news from the diving industry	By Gene Gentrup
106	No Dumb Questions: How Old is Water? Questions from our readers	By Alex Brylske

DIVE EXPLORATION

82	Dive Geo: India: Odyssey to the Coconut Isles. India's tropical islands are home to exotic cultures and beautiful reefs.	By Jean Pierce
110	Dive Traveler: Currency Exchange: Savvy Tips For Swapping Currencies. Tips for pinching pesos and saving centavos	By Bret Forbes
112	Passport: Dive travel incentives around the globe Compiled by Gene Gentrup

EVERY MONTH

71	Scuba Skills: Communicating Underwater: Made Easy. Dive slates as communication tools	By Lynn Laymon
75	Instructor Tips: Games Instructors Play: How Games Can Lead to Greater Learning Serious fun for instructors and students	By Barry Shuster
79	Always Learning: Diving to Distraction: When Concentration Counts A look at clear-headed diving	By Mark Twombly
91	Imaging: From Day to Night: The Darker Side of Underwater Photography A world of nocturnal creatures awaits the nighttime underwater photographer	By Dave Albrecht
95	Family Diving: Submersed in Science: The Ocean Becomes a Family's Classroom. A science fair project that involves the whole family	By Janet and Jesse Simonsen
99	What About: The New Age of Underwater Navigation: Personal Navigation Systems for Divers How to get there and back with high-tech help	By Lynn Laymon
104	Dive Shop: Gear for Better Diving Compiled by Cathryn Castle
114	What's That?: The Yellowhead Jawfish: Romancer, Dancer and Home Keeper A close-up look at a fascinating sand dweller	By Karen and Ian Stewart
117	Classifieds
121	Dive Training Quiz Test your knowledge of the information in this month's issue
122	Final Check: What It Looks Like When ... Your Power Inflator is Operational. How to get a good connection	By Linda Lee Walden