THE COVERS Articles & Editorials MAY 2004 • Volume 14 No. 5
 
By Keith Ibsen
Some old salts might think they've seen everything there is to see underwater, but believe it or not, scientists still stumble across new and as-yet unidentified species. Greg Laslo's article, "New Kids on the Block: How Scientists Identify New Species" takes a look at the incredible process and how, once they've been discovered, members of the animal kingdom get their names.
FEATURES
28 What Makes a Fish a Fish?: Common Characteristics of Fishes.
While many divers know that groupers and gobies are fishes, a whole lot of people fail to realize that sharks, rays, eels and even sea horses are also fishes. These creatures share certain similarities, yet also have vast differences. So just what is it that makes a fish a fish? The author examines the characteristics that scientists consider when distinguishing fishes from other animals.
By Marty Snyderman
38 A Trip to the Scuba Market: How to Select Equipment That Matches Your Needs.
There are many things to consider when preparing your "scuba shopping list." The environment in which you plan to dive, the type of diving activities you'll be engaged in and your equipment budget all are major factors. And once you have made those determinations, you still are faced with choices regarding various designs, makes and models.
By Lynn Laymon
48 The Quest Continues: Modern Advances in DCS Theory.
It may seem that, given its long and rich history, science has figured out everything there is about decompression. In fact, although decompression models appear to be getting more and more reliable, our knowledge of the complex physiology involved is still in its infancy. In this third installment in a series on decompression sickness, the author looks at how military research, modern scuba gear and repetitive diving profiles gave rise to new theories.
By Alex Brylske
COMMENTARY
8 Editorial: Blinded By Science? By Alex Brylske
10 Buddy Lines: Fish Pain - The Debate Continues  
18 Dive Observer: Navy Shipyards May Hold Future Dive Attractions and other news from the diving industry By Gene Gentrup
97 No Dumb Questions: A Mirror as a Training Aid, Ear Issues: Questions from our readers
Topics
By Alex Brylske
91 Eco-seas: New Kids on the Block:
Discovering a new species is surprisingly common
By Greg Laslo
DIVE EXPLORATION
72 Global Dive Exploration Map: A geographical guide to great dive destinations across the globe  
74 Dive Geo: Saba and Statia:Mighty Mounts of the Lesser Antilles. Dormant volcanoes make for dramatic diving By Jean Pierce
83 Dive Traveler: Shanghaied in Shanghai: Reasons to Do Your Dive Travel Homework. If you don't, it could cost you a fortune, cookie By Robert N. Rossier
89 Passport: Dive travel deals from all over
Compiled by Gene Gentrup
 
90 Diving USA. Dive travel opportunities across America  
EVERY MONTH
59 Scuba Skills: You Take Care of It; It Will Take Care of You:How to Prevent Equipment Problems. Simple ways to keep your gear working By Lynn Laymon
63 Instructor Tips: As Brave as a Bathtub Full of Sharks: Tools to Improve Your Public Speaking. Good speakers make better scuba prospects By Robert N. Rossier
67 Always Learning: A Chain of People, a Call for Change: Wrestling a Gill Net, and Winning. How one person can - and did - make a difference By Marty Snyderman
102 Dive Shop  
103 Compiled by Cathryn Castle  
104 What's That?: Little Fishes, Fascinating Lives: Blennies and Gobies. They're difficult to spot, but fun to watch 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 Scuba Unit Is Not an Accident Waiting To Happen. Leaving it standing up isn't a good idea By Linda Lee Walden