JANUARY 2000 • Volume 10-Number 1

THE COVERS	Articles & Editorials	JANUARY 2000 • Volume 10-Number 1
By Eric Hanauer	Happy Y2K. Like practically everyone else, we're taking the opportunity to review the past - and make predictions about the future - of scuba diving. This month's cover feature titled "Scuba 2010: A Look Ahead" asks several dive industry members what they think the next decade will bring.

FEATURES

28	Scuba 2010: A Look Ahead	By Eric Hanauer
42	Between Worlds: Understanding Marine Mammals Perhaps no one fully understands humankind's affinity for other mammals, but undoubtedly they occupy a special place in our view of the animal kingdom. And for divers, marine mammals hold a special place in our hearts - not just whales, but all marine mammals, a group that includes seals, sea lions, walruses, dolphins, porpoises, manatees, dugongs and sea otters. The author examines the link between marine mammals and their land-dwelling cousins.	By Marty Snyderman
54	Lessons From the Whales: The Mammalian Diving Reflex To survive life at sea, most air-breathing mammals that returned to this watery domain had to acquire the ability to dive to great depths and remain there for extended periods of time. Understanding just how marine mammals accomplish their incredible diving feats requires a little insight into their unique physiology. But what's even more intriguing than the science is that other nonmarine mammals - including humans - have retained some of these basic adaptations. One such adaptation is called the "mammalian diving reflex."	By Alex Brylske

COMMENTARY

8	Editorial: We're Here!	By Alex Brylske
10	Buddy Lines: Readers Share, Suggest and Correct
18	Dive Observer: Aggressor Fleet and Peter Hughes Join Forces for Environmental Protection and other news from the diving industry	By Rachel Warbington
95	No Dumb Questions: Lasers, Gases, DCS Risk Readers ask about laser pointers, helium and uncontrolled ascents.	By Alex Brylske

DIVE EXPLORATION

88	Dive Geo: Puerto Rico: The Caribbean's Rich Port Visitors venture to Puerto Rico to enjoy great diving, lush tropical rain forests and beautiful beaches - and to share in the island's rich cultural heritage.	By Steve Simonsen
100	Dive Traveler: Bad Bumps or Big Bucks? A Look at Airlines' Overselling Policies How to avoid getting bumped, and how you can turn the airlines' overselling policy into big savings on future air travel.	By Cathryn Castle
102	Passport: Dive travel incentives around the globe Compiled by Cathryn Castle

EVERY MONTH

65	Scuba Skills: The North and South of Using A Dive Compass: Underwater navigation made easy	By Lynn Laymon
69	Always Learning: Fluid Dynamics: Striving for Underwater Perfection A look at precision, perfection and human error	By Mark Twombly
73	Instructor Tips: Teaching the Elements of Dive Travel Planning How to help your students get there and back with ease	By Robert N. Rossier
79	Imaging: How to Create a Slide Presentation What to do with your photos - and how to share them with friends - after your dive trip	By Dave Albrecht
83	Weather and Waves: Sea Breezes: How Winds Affect Diving Find out where the wind comes from - and how it can affect your dive	By Jack Williams
104	Dive Shop: New Millennium, New Gear Compiled by Cathryn Castle
106	Legal Briefing: The Paper Trail: Legal Documents That Can Bring You Peace of Mind When You Travel. Expert advice on wills, trusts and other important legal docs	By Jeana Sciarappa Schott
109	What About: The Historical Diving Society: Keeping Our Past Before Us A look at an organization dedicated to preserving diving's rich history.	By Bob Wohlers
112	What's That?: Seeing Spots: A New Way to Observe Spotted Drums How to see them - and tell them apart	By Dee Scarr
115	International Classifieds
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... You're Computer-Equipped. Share the fun - but not your dive computer - with your buddy.	By Linda Lee Walden