EVERYBODY'S BACKYARD

By Mark Young 

European explorers led by Christopher Columbus were actually searching for a sea route to Asia when by luck they discovered the Caribbean and the Americas. This wasn’t so lucky for the various native populations, however; they couldn’t defend themselves against conquest, but the most devastating import was biological. Where the people of the three known continents had long been exposed to each other’s diseases and developed a strong immunity, the cultures that the “Columbuses” discovered were powerless against the import of smallpox, measles and influenza. Mere contact killed millions of indigenous people.

In a sense you could say that throughout history subsets of man have been an invasive species. And wherever we humans have gone, nature has been along for the ride. 

People tend to think of “invasive species” only in negative terms, but the phrase has several degrees of definition. Toward the “OK” scale it refers to “introduced species or nonindigenous species that are rapidly expanding outside of their native range.” A not-so-OK connotation is, “alien species whose introduction or spread threatens the environment, the economy, and/or society, including human health.”

Degrees of the definition are appropriate. For example, an argument can be made that the introduction of most exotic species has richly enhanced biodiversity. Consider traveling plants; more than 4,000 species introduced into North America during the past 400 years make up nearly 20 percent of our current plant biodiversity. And, with no evidence, according to some biologists, that a single resident species has been driven to extinction. In other words, with some pesky exceptions, plants that invade fit in. 

As divers we tend to think negatively about the arrival of nonindigenous marine life, yet the opening of the Suez Canal in 1869 introduced 250 new fish species into the Mediterranean from the Red Sea, reportedly resulting in only a single extinction. So there’s that. 

On the other hand, who wants the Burmese python at the top of the Everglades food chain? (Have you seen the YouTube video of the snake that exploded while digesting an alligator?) Their numbers in the Glades are estimated at more than 100,000, growing fast, and pose a threat to natural balance in a truly spectacular ecosystem — all because a few pets outgrew their welcome. Perhaps the Nile monitor lizard, an African heavy that grows to 7 feet (2 m) in length can give the pythons a run for the top; they’ve also established Florida residency. Kind of makes the U.S. invasions of zebra mussels and Asian carp seem tame.

This month’s cover feature is an update on the Atlantic/Caribbean invasion of lionfish, another pet let loose. There’s no debate that this has the possibility of an environmental disaster. One hope against it is the commercial potential of lionfish as a culinary dish; that would at least put something above them in the food chain. Another possibility is whatever mechanism keeps them in check in their far-Pacific homeland, something that is being studied to determine. 

However this plays out, we’re about to see in the extreme how well natural balance can occur where it must, while we humans continue to move nature past the geographic boundaries that once contained the Earth’s biota, and into our own backyards.

TIES THAT BIND

By Mark Young

A memory is what is left when something happens and does not completely unhappen.
~Edward de Bono

During a business trip to Florida I wound up near where I used to live, and stopped into a small airport where I kept a plane for a quite a while. I’m not quite sure, after nearly 20 years, why I decided to visit the flight center where I was based, but it called me back.

I’m guessing that the flight instructor behind the counter was in diapers when I was a customer there. We had a great conversation and some laughs, me sharing stories about how the place was, she telling how it is, and the old wooden flight center felt like home. Just the smell of the place summoned fond memories, and the experience was nicely nostalgic.

It's surprising how much memory is built around things unnoticed at the time. What from today will cause you to look back tomorrow and smile? You might just be in that place; you were probably introduced to this magazine at your local dive center and someday that store, the people you meet there and the experiences that you collect might mark a considerable time of your life. Most store owners and dive instructors are in this business to pass on to you what has such importance to them, so connecting you to diving, and a lot of great things to remember, should be natural. But sometimes even important things need a solid introduction to help them stick.

I mention this because of how the initial introduction to diving has changed. Not many years ago, people who learned to dive went through about 40 hours of face-to-face instruction. That amount of classroom and pool time allowed instructors and students to get to know one another, and a provided good conduit for the passion of diving to transfer. At some point, the industry decided that so much of a commitment to scheduled time was limiting participation, so they set out to shorten it with home study options to attract more people. As a result, some of today’s students may not spend as much time with an instructor outside of the pool sessions. But are they missing an important connection? Did we abbreviate ourselves out of the bonding that comes with spending time?

I wondered about that as I read this issue’s Instructor Tips column about the positive learning effects of instructor storytelling. It’s a reminder that much of learning happens outside the lines of a book or the glare of a screen. Observing that young flight instructor, I imagined how well she must be bonding her students to the excitement and the possibilities of aviation. I thought of her importance as a mentor, and her ability to inspire her students through the emotional desert of dry textural material.

I remember that learning to dive was an escape from my cubicled world; not a drag at all. Learning doesn’t just involve what you know; it inspires what you do with what you know. It is the emotional, not textural information that forms the strongest attachment. There is terrific benefit to being surrounded early on by the diving environment, the enthusiasm of a good instructor and sharing the excitement, anticipation and even some of the apprehension with other people who are learning too.

We in the industry want to connect you. It is important for you to help establish the connection too, especially if you don’t feel that it exists for you as it should. You don’t want to let this experience unhappen. Stop by your dive center to linger a while, and you might just find yourself stopping back in 20 years, and finding memories.

EDITORIAL September 2010: ENDLESS DIVING

By Mark Young

I know a couple who fell so hard for diving that they racked up close to 200 dives in just their first year. Living in South Florida made that easy. She would pick him up after a business trip, and head straight from the airport to a midnight dive. They dove the local charters; they bought their own boat which, since they were always under it, they renamed Two Down; they went east to the Bahamas, south to the Keys and into the Caribbean. They couldn’t get enough.

But there was more to get, like diving to the North. Any clue about Florida’s springs, just a few hours away, escaped them for years or they would have been there, next chance. He recalls that regretfully, like they were robbed.

Connect that to this. The nation’s highway system was built with materials that were mined along the way. The abandoned quarries filled with groundwater and many were reclaimed as recreation areas. Divers came along and populated the bottoms with things like airplanes of all sizes, helicopters, school buses, semitrailers, busses, boats and things you wouldn’t imagine. Some of the quarries are absolutely beautiful with a wide range of aquatic life, forests and sheer rock walls. Many have camping facilities and some even host outdoor music concerts. Their proximity to the highways that they built provides divers with easy access. As you would guess lots of quarry diving goes on in the United States.

Lots of other diving goes on too. Within our borders there is endless spring, lake, river and coastal diving. Heck, you can even dive in many of the nation’s aquariums, a theme park and in a major Las Vegas show. Local dive outings are an important business and social component for many of the nation’s dive centers.

The purpose of this editorial is to call your attention to a resource that we haven’t talked about much. It is the local diving component of our magazine and website. Many people who get certified limit their diving to foreign trips, and some of that is simply because they aren’t aware of the opportunities that are close by. It’s why we introduce two local diving spots in these pages each month. The couple that I talked about was also the inspiration for the “Diving USA: Dive Sites Across America” section at dtmag.com. That they were so nuts about diving but didn’t know about nearby dive sites raises the odds that lots of others don’t know about theirs either, especially newer divers.

For a number of years we have been compiling our local dive writings on the website, and now have hundreds of sites pinpointed on the map so that you can see the proximity and read about diving’s local opportunities. It is the most visited area of our website, and we encourage you to use it.

A great thing about diving is that it happens everywhere. Not many activities can match the experiences, the diversity, and the friendships that diving presents. Diving is literally available worldwide in such wide range. And whether you live in California or Arkansas, it is also close by.

Care to comment?

We add locations to the local diving site at http://www.dtmag.com/ monthly. If you come across a place that we haven't covered. or would like to tell others about a local site that you visit, post your comments below.