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Laryngospasm and Anxiety
March 30th, 2022
If water entered the larynx, the epiglottis’ natural response would be to close the airways to prevent aspiration. The larynx would reflexively trigger coughing to expel the fluid, or you would try to... Read More
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Not Only for Diving
March 30th, 2022
The training style DAN uses — repeating skills and information as building blocks to the next topic — gave me a reliable memory bank of the steps for first aid and neurological assessment. I easily re... Read More
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More Than a Sore Shoulder
March 30th, 2022
When reflecting on what likely went wrong, I realized that my 15 minutes of cold decompression after 45 minutes of comfortably warm ongassing at depth was a textbook case of what not to do. While it w... Read More
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Low-Visibility Diving
March 30th, 2022
It can be a fun experience to dive without seeing anything. When you need to rely totally on your ears and hands, you will be surprised by how quickly your body can adjust to the new situation.
... Read More
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Building Better Balance
March 26th, 2022
Most activities that keep you on your feet naturally help you maintain balance, but the targeted exercises in this circuit can further improve your stability. These unilateral exercises isolate each s... Read More
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Underwater Photographer: Fred Buyle
March 26th, 2022
Mark Addison had luck freediving with sharks in the Indian Ocean off the east coast of South Africa. He had discovered that if we waited for warm, clear water to come in over the pinnacles, we might e... Read More
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Air and a Spare
March 26th, 2022
If you think a small bailout bottle is right for you, consider a few other issues. Maintenance requirements will be similar to those for a full-sized scuba tank, including hydrostatic testing, so you ... Read More
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Underwater Smartphone Photography
March 26th, 2022
Smartphones with underwater housings have some advantages over large camera rigs, such as the ability to fit in smaller environments. You can use this advantage to get angles of the subjects that othe... Read More
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Chasing Weeds
March 26th, 2022
Sargassum is a floating, golden-brown macroalgae with pearl-sized air bladders that resemble grapes buoying thick leaves. Wind and waves weave together the leaves to form large, nearly impenetrable ma... Read More
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Scuba Cylinder Rundown
March 26th, 2022
When choosing an appropriate cylinder size, consider factors such as the cylinder’s weight, your gas consumption rate, anticipated dive profile, personal comfort, and how much gas your buddy may need ... Read More
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Celebrating Young and Old in Turks and Caicos
March 26th, 2022
West Caicos provided great sites for all ages, especially the Gully, with barracuda, sharks, turtles, stingrays, groupers, cowfish, and more. But in my opinion the best of the best is The Dome, which... Read More
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When Should the Rescue Begin?
March 26th, 2022
When things go wrong, an effective rescue is vital for a favorable outcome. Most rescue diver courses teach students basic techniques to apply after something goes wrong, but better courses also provi... Read More
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Preventing Breathing gas Contamination
February 5th, 2022
Ask questions and be observant. If you are unsure about the breathing-gas quality at a fill station, ask questions about compressor maintenance, procedures and testing.... Read More
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DIVERS LOSING ACCESS TO EMERGENCY CARE
February 3rd, 2022
The harsh reality is that the percentage of hyperbaric medicine programs introduced during the last decade that are available on a 24/7 basis to treat divers and these other emergent conditions has co... Read More
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UNCERTAINTY AFTER DIVING: Case Report and Recommendations #3
February 3rd, 2022
Diagnosing DCS is generally a process of ruling out other causes. It is imperative that we not discount the possibility of nondiving-related injuries or illnesses just because someone was diving. Howe... Read More
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UNCERTAINTY AFTER DIVING: Case Report and Recommendations #4
February 3rd, 2022
The signs and symptoms of DCS are not exclusive to that condition. However, when a person experiences signs or symptoms after diving, DCS is very often presumed to be the diagnosis. This is not all ba... Read More
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UNCERTAINTY AFTER DIVING: Case Report and Recommendations #2
February 3rd, 2022
Medications can also affect your ability to function normally, regardless of whether you’re on land or underwater. Common seasickness medications, for example, come with advisories stating that they m... Read More
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UNCERTAINTY AFTER DIVING: Case Report and Recommendations #1.
February 3rd, 2022
Books and articles about DCS usually include an extensive list of signs and symptoms. It is important to remember that none of the signs and symptoms in any such list is exclusive to DCS. ... Read More
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MARINE ENVENOMATIONS: Jellyfish & Hydroid Stings
January 21st, 2022
Anaphylaxis is a potentially deadly allergic reaction that can involve respiratory distress, airway compromise and other unstable vital signs. If anaphylaxis occurs, immediately administer epinephrin... Read More
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WOMEN’S HEALTH & DIVING
January 21st, 2022
Men and women, however, are physically and physiologically different. With women representing about third of the recreational diving population — in 2013 the Professional Association of Diving Instru... Read More
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LIONFISH STINGS
January 21st, 2022
Puncture wounds by lionfish can cause pain lasting for several hours, rapid edema (swelling) and subcutaneous bleeding. Swelling typically clears in two to three days, while the tissue discolorations ... Read More
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BACK TO BASICS : UNDERSTANDING DECOMPRESSION ILLNESS
January 18th, 2022
Divers face two types of decompression-related injury: decompression sickness (DCS) and arterial gas embolism (AGE). Collectively, these conditions are often lumped together and referred to as decompr... Read More
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Stacking The Deck
January 18th, 2022
Like the seafaring explorers of old, many in the diving community travel farther, dive deeper and consistently search the horizon and plumb the depths for new adventure. As a group, we are continually... Read More
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Tonga’s Gentle Giants
December 1st, 2021
Humpback whales feed in polar waters during the summer and then migrate to tropical or subtropical waters to breed during winter. Various locations offer seasonal whale-watching, but swimming with the... Read More
Categories
2022
January
February
UNCERTAINTY AFTER DIVING: Case Report and Recommendations #1.UNCERTAINTY AFTER DIVING: Case Report and Recommendations #2UNCERTAINTY AFTER DIVING: Case Report and Recommendations #3UNCERTAINTY AFTER DIVING: Case Report and Recommendations #4DIVERS LOSING ACCESS TO EMERGENCY CAREPreventing Breathing gas Contamination
March
When Should the Rescue Begin?Celebrating Young and Old in Turks and CaicosScuba Cylinder RundownChasing WeedsUnderwater Smartphone PhotographyAir and a SpareUnderwater Photographer: Fred BuyleBuilding Better BalanceLow-Visibility DivingMore Than a Sore ShoulderNot Only for DivingLaryngospasm and AnxietyPulmonary Hypertension and DivingTitan Meets TitanicPool Operation: Know Before you GoThe Argonaut Octopus and the jellyfishShort but Beautiful Lives
April
A Sense of PurposeMexico’s Sardine RunHigh-Pressure Hose injuriesA Hole in My HeartGoing UpConcussion and Return to DivingMarfan Syndrome Recommendations.South African Sardine Run by Walter BernardisSouth African Sardine Run By ProdiveSardine Run Port Elizabeth by ProDiveSardine Run Port St Johns by ProDiveScuba Diving In MauritiusScuba Diving in TanzaniaScuba Diving in the SeychellesScuba Diving in Nosy BeScuba Diving in MalawiScuba Diving in KenyaScuba Diving in South AfricaScuba Diving in Mozambique
2021
March
Old Habits Die HardSave a Diver, Save YourselfCylinder SafetyUndercover CrabsReef safe sunscreenPhysics, Biophysics and Decompression SicknessModels and Marine LifeSunscreen and CoralCristina Mittermeier: Commitment to ConservationDiving After a StrokeCurrent DivesThis Bites: Prevention TreatmentEnvironmental Considerations for Disinfection
April
Aqua Pool Noodle ExercisesUnderwater Photographer and DAN Member Madelein Wolfaardt10 Simple Things You Can Do to Improve Your Underwater PhotographyCOVID-19 and Diving: March 2021 UpdateDiver Return After COVID-19 Infection (DRACO): A Longitudinal AssessmentGuidelines for Lifelong Medical Fitness to DiveExperienceFitness Myth or Fitness Fact?The Safety of Sports for Athletes With Implantable Cardioverter-DefibrillatorsCardiovascular Fitness and DivingHypertensionPatent Foramen Ovale (PFO)Headaches and DivingMiddle-Ear Barotrauma (MEBT)O’Neill Grading SystemMask Squeeze (Facial Barotrauma)Sinus BarotraumaInner-Ear Barotrauma (IEBT)Middle-Ear EqualisationAlternobaric VertigoDecompression IllnessOn-Site Neurological ExaminationTreating Decompression Sickness (The Bends)Top 5 Factors That Increase Your Risk of the BendsHow to Avoid Rapid Ascents and Arterial Gas EmbolismUnintended Rapid Ascent Due to Uncontrolled InflationUnexpected Weight LossFlying After DivingWisdom Tooth Extraction and DivingYour Lungs and DivingScuba Diving and DiabetesDiving after COVID-19: What We Know TodaySwimmer’s Ear (Otitis Externa)Motion SicknessFitness for DivingDiving After Bariatric SurgeryWhen to Consult a Health-Care Provider Before Engaging in Physical ActivitiesFinding Your FitnessHealth Concerns for Divers Over 50Risk Factors For Heart Disease