SDI OPEN WATER DIVER VIDEO SERIES 1. Aquatic Life   2. Underwater Environment   3. Essential Scuba Diving Equipment   4. Keeping Your Equipment Streamlined   5. Scuba Equipment Assembly   6. Disassembly of Scuba Equipment   7. The Physics of Ascents and Descents   8. Dive Physics - Keep Breathing   9. Dive Physics - Understanding Neutral Buoyancy   10. Dive Physics - Gas Absorption   11. Dive Planning...

You’ve got the training. You’ve got the will.  You’ve got the trip booked. You’ve become accustomed to the gear you use at your local diving sites.  For whatever reason you can’t or don’t want to bring your own diving kit with you.  This may raise a few questions: Is it safe to rent? What am I looking for? How can I be sure I’ve been given appropriate gear? We will...

One of the fundamental skills first taught to any new diver is the art of buoyancy control. Most people generally gained their first taste of buoyancy as a child, learning to swim. Taking deep breaths caused them to float, while exhaling caused them to sink. This idea is taken into diving, with the aid of specialised equipment, to advance the enjoyment of the dive as divers are able to control...

It is well known that having a good cardiovascular fitness has numerous long-lasting health benefits. However, are there any benefits of having a high level of fitness to diving? Cardiovascular Fitness Cardiovascular fitness is the ability of the heart and lungs to supply oxygen-rich blood to the working muscle tissues, and the ability of the muscles to use oxygen to produce energy for movement. Having a good level of fitness...

In selecting equipment for a planned dive, the technical diver’s first concern will be his supply of breathing gas, based upon the requirements for a particular dive, as well as a suitable reserve for contingencies. Technical diving may involve extended bottom times, perhaps at relatively deep depths, with additional time spent underwater during mandatory decompression stops. Sometimes a diver will be able to meet his gas supply requirements with a...

The DIR-knotUsed by divers on long hoses and HP hoses Courtesy or Agir Brok - Original Article LINK Do you need to attach a clip to a hose, SPG or backup light? Struggling with figuring out how to do it? Maybe you have been told that there must be no metal-to-metal connections. Maybe you have seen other divers use zip-ties, o-rings or special breakaway contraptions that are single use. When...

Many beginner divers will rent their gear until they have a feel for what suits them in the water. Once you decide to get stuck in and kit up, you’ll want to consider having your own BCD. Rental kit can vary in quality, size, and design.  Having your own lets you really get to know your own buoyancy and dial in your skills to the next level. Dive to dive...

Choosing a mask is a very personal thing and what works for one person may not work for another. The one key thing to keep in mind when choosing a mask is that fit and comfort are more important than anything else. It may be the all singing all dancing mask that everyone has or wants but if it doesn't fit properly that's the end of it. If you are new...