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That's physiclally (almost) impossible. The pressure differential at depth will make it impossible for you to suck enough air to survive. That's the function of a diving "regulator" to equalize the pressure at depth so you can breathe. Try it in a pool, I'm pretty sure it won't work much past 4-5'.Then I was also thinking about some kind of 20 ft hose that one person can hold at the surface while the other goes under to swim around.
Ginnie Springs Outdoors - Discover SCUBA might be your best option now. You'll learn basics then go on a real dive with gear to probably 40' or so. Usually all in a morning or less. For $100.
The crystal-clear waters of Ginnie Springs provide the perfect place to try scuba for the first time. There are no wind, waves, breaking surf, stinging salt water or rocking dive boats to worry about -- just the opportunity to relax and enjoy the magic of the underwater world under the guidance of our highly experienced instructors. Discover Scuba Diving is a non-certification program. The emphasis is on enjoying the experience of breathing effortlessly under water -- not on mastering complex skills. It is the perfect opportunity to find out whether or not scuba is right for you, before committing to a full-length, entry-level certification course. The Discover Scuba activity fee includes all equipment, instruction, air fills and dive fees. There are no additional expenses.
SNUBA is relatively safe. Tourists on cruise ships have been doing it for decades with just about an hour of training. But I believe only to 12'? feet - the hose length...
Another option if you just want to snorkel around Ginnie - and shallow ocean reefs - is take a Freediving course. I've been on a dive at 80' and met up with a freediver - he looked around for a couple of minutes then left. They used more streamlined gear than divers generally to optimize their swimming performance.
Don't - first of all that was a movie. So you didn't see the safety divers just off camera. 2nd without proper Scuba Training (yes you can buy them without it) there's a chance you can Air Embolize. 3rd how do you know the actors weren't properly certified? Most movies that involve diving have an on-site Dive Safety Officer always present during shooting - usually they have credentials well beyond an Instructor Rating also.We don't dive yet. I just saw a movie of some carrying these 1 foot portable oxygen tanks around (for emergency purposes but will serve ours well), which I was interested in buying.
Read this first few posts of this thread and decide if the risk of an Arterial Gas Embolism is worth it to you: http://www.scubaboard.com/forums/kimber-watch/146485-updates-kimber-tekdivegirl.html
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