Learning
How do you donate air? There's more than one way to do it. That random dive buddy you
ended up with at the boat dock might do something unexpected in an out of air situation. SCUBA Theory is back again.
Today, it's all about sharing air.
How do you share? Divers naturally share air the way they were trained to. Training methods vary between shops, instructors and organizations. Being caught off guard because someone had different training can have serious consequences. Even if you only dive with specifically trained buddies, you may be called upon to assist or even rely upon someone else who isn't.You gave them ...
How do you share? Divers naturally share air the way they were trained to. Training methods vary between shops, instructors and organizations. Being caught off guard because someone had different training can have serious consequences. Even if you only dive with specifically trained buddies, you may be called upon to assist or even rely upon someone else who isn't.You gave them ...
Sport divers are instructed on the use of open circuit SCUBA. Rebreathers are a bit of an enigma. Commercial units are
expensive, complicated and get pretty weird looks on the diving boat. Surprisingly, rebreathers have been around for
longer than modern open circuit SCUBA diving. Today in SCUBA Theory, we're covering basic rebreather theory.How it works
During respiration, oxygen is absorbed and carbon dioxide is expelled. Atmospheric air is only about 21 percent
oxygen. The rest of the gasses are inert and simply pass in and out of the lungs. (The body can and does absorb inert
gasses, it just doesn't metabolize them) In open ...
"Don't hold your breath" is a mantra heard in virtually every scuba diving course every taught. You can easily
damage your body during ascention by holding your breath during SCUBA diving. The expansion of the air can quickly cause
damage regions with very few nerve endings to tell you that you're doing bad things to yourself. Today in SCUBA Theory,
why breath holding is a valuable skill to practice.That's not my weight belt
Hear me out before you start thinking about how buoyant I'd be with an extra fifty
pounds of lead. The most dangerous thing a diver can experience under the water is panic. ...
Have you ever been choked a bit by some stray water in your snorkel or a leaky regulator? Today I'm back with another trick to keep you more comfortable in and under the water. You can practice this one in the bath tub, shower, pool, whatever. Check out today's SCUBA Theory!
Popcorn breathing refers to the skill of breathing through water. Here's how to do it.
Partially fill your snorkel with water. (non-ocean is preferred to start out). Look downward, but don't submerge.
Put the snorkel in your ...
Popcorn breathing refers to the skill of breathing through water. Here's how to do it.
Partially fill your snorkel with water. (non-ocean is preferred to start out). Look downward, but don't submerge.
Put the snorkel in your ...
This morning was our first one hour pool session. Everyone is issued a mask and we send them into the pool. The first task is to get the students neutrally buoyant. We usually start everyone out with around ten ...
Beginners / Experts
Much like scientists can read the rings of trees to determine climate changes that tree has endured, researchers can "read" coral. For example, by analyzing the coral's strontium-calcium ratio, scientists can measure how much rain fell as much as 6500 years ago. In a recent study, in fact, researchers with ...
Eco
While some people worry that fish populations are being exploited at a dangerous pace, others are rejoicing at the small successes that are occurring. In Australia, for example, the red throat emperor has made a spectacular comeback in recent years. Once heavily overfished, the fish seem to have rebounded. Why? ...
Health
According to Gold Coast Duty Officer Kevin Dunn, "They are an amazing little ...
Organizations
