An essential part of any scuba diving expedition is the scuba tank. For obvious reasons, you want to be sure that you get a scuba tank that is reliable and has enough capacity for the majority of your dives, yet easy enough for you to maneuver and carry. Scuba gets its name from the diving tank, because SCUBA stands for Self-Contained Underwater Breathing Apparatus. In fact, that is the distinguishing factor between snorkeling and scuba diving because the high-pressure gas for breathing allows you to go deeper underwater without resurfacing.

Scuba tanks contain several components including the aluminum or steel pressure vessel that holds the mixed oxygen-gas mixture, the pillar valve which connects to the diving regulator, and the rubber o-ring that forms a seal between the valve and regulator. The tanks made of steel add more weight to those that wear highly buoyant diving suits, or other tanks might be made of aluminum for ease of carrying. They should not be confused with oxygen tanks, because scuba tanks contain an air mixture that includes oxygen, but is not the oxygen-rich, hospital quality mixture.

Another factor that comes with deeper diving is that you might need different scuba tanks for each phase or depth of the dive. For example, your tank for the ascent and descent might include 21 to 40 percent oxygen, where the scuba tank you would use in deeper water might contain lower amounts of oxygen below the 21 percent or hypoxic below 17 percent. Decompression scuba tanks will contain high amounts of oxygen or pure oxygen to accelerate the decompression process.

Those that are certified in scuba diving instruction know formulas to calculate the amount of air you will need and take other factors into consideration. Details such as tanks that get lighter as you breathe them are on the verge of getting empty, can be a factor to consider in buoyancy, which will increase towards the end of the dive, for example. Recreational divers don’t need to worry about these scuba tank issues as much as those doing technical dives, such as exploring old shipwrecks in cold, deep and murky waters, for instance. The importance of your scuba tank is obvious when you are going on scuba diving expeditions, so it is advisable to seek out certified and expert help on your tanks before venturing out on your own.

Scuba diving is an exciting and exhilarating hobby that allows you to view an underworld life most won’t ever see firsthand. When you are diving, you are given an intimate show of what life looks like below the water line. But, it takes a certain type of person to be able to go scuba diving because it is dangerous. Not only do you have to worry about losing oxygen, but what about the threat of underwater creatures?

Sharks and eels are probably the two creatures that strike fear into the hearts of most people when they think about scuba diving. But, actual attacks are very rare and your chances of getting killed or hurt are slim. Still though, you do have to think about what would happen if you were diving and came face to face with an angry shark. Your wet suit wouldn’t do anything to protect you against those teeth. So, think about that long and hard before you jump off that boat next time.

Though it is a scary thought, perhaps that’s the appeal for many scuba diving fanatics. Not only do you get to see the amazing underwater life, but you are also in a constant state of threat that something could go wrong at any minute. But, diving isn’t the only hobby that’s fraught with danger, think about rock climbing, bungee jumping and white water rafting. People love these activities for the thrill and the high they get. So, scuba diving probably isn’t any different and you get the added bonus of seeing vibrantly colored fish and exotic sea creatures as well.

Before you set off to go scuba diving, make sure you’ve been well trained. Take a class from a professional so you will know exactly what to do and when to do it. It’s always good to learn this way so you’ll know what to do in case of an emergency as well. Buy a quality wetsuit and other diving essentials and you’ll be a diving pro in no time!