THE COVERS Articles & Editorials DECEMBER 1998 • Volume 8 Number 12 
   Most of us take water for granted, but without it, we'd be all dried up. This month's covers and the feature article "Water World: A Review of the Properties of Water," examine water at its molecular level, and remind us just how important water is to us as divers - and as human beings.
FEATURES
20 Water World:
We drink it, bath in it, swim and dive in it, yet very few of us have ever taken the time to explore the intricacies of water. How much do you know about how water affects us in our everyday lives and more specifically, as divers? This comprehensive article reminds us about the importance of water, the elixir of life.
By Lynn Laymon
28 A Siren's Call:
It's a warm and sunny vacation spot for more than 43 million visitors each year. But for the "locals" - Florida's manatees - the Sunshine State isn't all Mickey Mouse. Find out more about manatees - where they live, what they eat, and why they're described by the US Marine Mammals Commission as "one of the most endangered species in America."
By Alex Brylske
36 Creating a Dive Journal: How to Log Your Dives
As divers, probably the most common yardstick by which we are measured is experience - the number of dives we have logged, and the hours we've spent beneath the surface. Learn how you can turn your logbook into an adventure journal - and a valuable tool for planning future dives.
By Robert N. Rossier
COMMENTARY
8 Editorial: Gray-Matter Diving By Alex Brylske
10 Buddy Lines: Readers Offer Advice
14 Diving Notes and News: Hit Movie Offers Happy Ending And other news from the diving industry By Alison Courtney
65 No Dumb Questions: From Dive Laws to Physics Laws, Readers Ask About Regulations, Capacities By Alex Brylske
DIVE EXPLORATION
60 Dive Geo: Costa Rica's Pacific Coast Wild Adventure, Topside and Underwater Described by National Geographic Magazine as the "most biologically intense place on earth," Costa Rica is also home to some high-voltage diving. By Dan Auber
72 Dive Traveler: Friendly Skies: Conquering Your Fear of Flying. Fasten your seat belt and be prepared for take-off - with confidence. By W. Lynn Seldon Jr.
75 Passport: Dive travel incentives around the globe
Compiled by Cathryn Castle
EVERY MONTH
43 Scuba Skills: Entering From Shore: How To Choose And Use The Appropriate Technique. Get your dive off on the right foot when you enter from shore By Lynn Laymon
47 Always Learning: Geek Diver: Joining The Populated World of Computer Divers. The author throws away his pocket protector and goes gadget-freak By Mark Twombly
51 Dive Instructor Tips: Asking the Right Questions: Assessing Student Knowledge - Tips for creating knowledge reviews that are a usable, reliable and valid By Robert N. Rossier
55 Family Diving: Little Buddies: Including the Kids in Your Dive Plan - How to plan a dive vacation the whole family will enjoy By Amy Laboda
70 Dive Shop: Great Ideas in Dive Gear
Compiled by Cathryn Castle
77 What About: A Diver's Dream Job: The Life of a Live-Aboard Crew - Working on a live-aboard does have its perks, but there's more to the job than diving. By Lynn Laymon
80 What's That? Camouflage and Mimicry: The Art of Blending in Underwater. A look at marine creatures that are hard to see By Dee Scarr
85 Classifieds
89 Dive Training Quiz: Test your knowledge of the information in this month's issue
90 Final Check: What It Looks Like... When You Muck Up The Bottom. How to stay off the bottom - and out of trouble with your fellow divers. By Lynn Laymon