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Posts with the category “alert-diver-winter-editions”

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How to Take Great Photos of Divers
June 12th, 2021
Get your buoyancy right before you take your camera underwater. You cannot take photos if you are flapping around trying to stay afloat or if you are constantly inflating and deflating your BCD. If yo...  Read More
by DAN Team
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Aqua Pool Noodle Exercises
April 1st, 2021
Exercising in water can be a great way to mix up your routine. The water supports your body and ensures low impact despite intense exercise. The effects of gravity are less profound in the water, so y...  Read More
by DAN Team
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Environmental Considerations for Disinfection
March 22nd, 2021
Divers, dive operators and dive professionals must continue to practice good hygiene and disinfection of scuba equipment during the COVID-19 pandemic. Disinfectant products kill microorganisms. When d...  Read More
by DAN Team
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This Bites: Prevention Treatment
March 22nd, 2021
Moray eels are the largest eel species, and they are known to produce toxins, which can be found in their mouths. Temporary paralysis of the bitten area can occur. Eels have an impressive mouthful of...  Read More
by DAN Team
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Current Dives
March 12th, 2021
Diving in currents can be exhilarating, but it can also be hazardous if you do not have the proper training or are unprepared. To get the most enjoyment, perform proper predive research and dive plann...  Read More
by DAN Team
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Cristina Mittermeier: Commitment to Conservation
March 4th, 2021
Photographer Cristina Mittermeier’s social media posts have insightful captions that reveal her deep commitment to ocean ecology issues. Telling stories that inspire, engage and ultimately motivate ac...  Read More
by DAN Team
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Diving After a Stroke
March 4th, 2021
Carefully weigh your return to diving, and assess the risk versus reward. No studies are available that address if the areas of your brain damaged by your stroke will be more susceptible to decompress...  Read More
by DAN Team
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Models and Marine Life
March 3rd, 2021
Underwater photographers usually evolve a specialty, but the first fork in their road typically involves defining an interest in either photographing natural history — marine life in particular — or c...  Read More
by DAN Team
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Physics, Biophysics and Decompression Sickness
March 3rd, 2021
Meiners and his team are currently working on tissue mechanics and tissue damage through gas bubbles in the spinal cord, or spinal cord decompression sickness....  Read More
by DAN Team
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Undercover Crabs
March 1st, 2021
The crabs manipulate the purloined pieces of attire with their mouths before attaching them to one of the many fishhook-shaped bristles arranged in rows on the carapace, rostrum, walking legs and claw...  Read More
by DAN Team
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Cylinder Safety
March 1st, 2021
Every year fires and ruptures in scuba, rebreather and oxygen cylinders occur. These incidents destroy property and injure, maim and even cause the death of cylinder filling-station operators as well ...  Read More
by DAN Team
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Save a Diver, Save Yourself
March 1st, 2021
The lessons learned in a rescue diver course may help you save your buddy or a fellow diver, as well as improve your ability to recognize and respond to your own situation...  Read More
by DAN Team
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Old Habits Die Hard
March 1st, 2021
Make it your standard practice to gently and completely turn on your air. If you’re an instructor, consider not teaching students the quarter-turn back. Dive operations should instruct their staff not...  Read More
by DAN Team
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A Predator's Dream
December 8th, 2020
Nuclear hunting, the most common multi species feeding association, primarily revolves around a foraging eel, octopus or goatfish (the nucleus) followed by a gang of feisty predators looking for an ea...  Read More
by DAN Team
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Scuba Diving and Factor V Leiden gene mutation
October 19th, 2020
The goal isn’t to find a physician to sign off on your ability to dive but rather to objectively determine whether your medical history, Factor V in your case, is compatible with diving....  Read More
by DAN Team
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The Watchman device and diving
October 19th, 2020
Divers who have AFib should be well rate controlled, both at rest and when performing moderate exercise, and understand the possible complications of their condition before considering diving. We reco...  Read More
by DAN Team
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The Importance of a Predive Safety Check
October 19th, 2020
Complacency and skipping your predive safety check or buddy check are entirely preventable factors in dive accidents. Complete all your checks before every dive. ...  Read More
by DAN Team
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Children and Diving
October 19th, 2020
Children are still developing both physically and mentally, which affects the decision about whether a young diver is fully capable or requires some modification. Some training agencies allow in-water...  Read More
by DAN Team
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Nitrogen Narcosis at shallow depths
October 19th, 2020
His gas consumption may indicate hyperventilation occurred during the dive. Without further speculation, the student will need a dive medical exam, and he should discuss this incident with a dive medi...  Read More
by DAN Team
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Oil and Particulates: Safe levels in Breathing Air at depth
October 19th, 2020
Laboratory analysis provides a good degree of accuracy but requires sending a sample, so it is a time- and money-intensive spot check. Several volatile organic compound (VOC) analysers are available f...  Read More
by DAN Team
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Dive Principles for Coping with COVID-19
October 19th, 2020
While it is sometimes tempting to pick up things underwater, divers know better. The Conus textile cone snail, for example, has a beautiful shell that invites collection, but it is also highly venomou...  Read More
by DAN Team
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Fluorescence Imaging help Identify Coral Bleaching
October 18th, 2020
Humans affect the very world we inhabit. Deforestation, fossil fuel use and environmental pollutants such as plastics and pesticides are changing our world. The oceans and the reefs within them are no...  Read More
by DAN Team
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Freediving For Science
October 18th, 2020
It is the second-deepest marine sinkhole in the world, yet it is accessible from land. Harboring coral reefs and other marine life, it is an ideal oceanic microcosm, sheltered from prevailing winds an...  Read More
by DAN Team
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Step Exercises with Cardio
October 18th, 2020
Considered a form of preventative medicine by the American College of Sports Medicine, exercise has a wide range of positive physical, mental and cognitive benefits. This timed program is designed to ...  Read More
by DAN Team
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Ray of Hope
July 3rd, 2020
With authentic expeditions you never know what you will encounter along the way. That is the single most treasured aspect of fieldwork and travel. I had recently co-founded a nonprofit organisation ca...  Read More
by DAN Team
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Caissons, Compressed-Air work and Deep Tunnelling
May 14th, 2020
During construction, the working spaces, or caissons, are pressurised with compressed air to keep out groundwater, and laborers (known as sandhogs) pass though pressure locks into and out of the caiss...  Read More
by DAN Team
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Effects of Aspirin on Diving
May 11th, 2020
Aspirin is a potent medication that has antithrombotic effects by affecting platelet function. Platelets play an important role in the clotting function. This effect can be seen with low doses of aspi...  Read More
by DAN Team
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No Sit-ups no problem
February 3rd, 2020
To avoid an increased risk of decompression sickness, DAN® recommends that divers avoid strenuous exercise for 24 hours after making a dive. ...  Read More
by DAN Team
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Water: Element of Life and Fitness
January 28th, 2020
As with any sport, maintaining a healthy body and good physical state are key to maximizing your experience. Water aerobics provides a diverse exercise program, and its bidirectional resistance target...  Read More
by DAN Team
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Tabata training - The four-minute fat torch
January 22nd, 2020
This program was originally designed for extremely fit athletes, the original protocol is enough to cause nausea in many people. Fortunately, people of most fitness levels can benefit from lower-inten...  Read More
by DAN Team
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The Right to Refuse Service
October 4th, 2019
Denying service to a paying customer can be difficult, especially if the customer is outraged or the business owner is more concerned about revenue than safety....  Read More
by DAN Team
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Fire Safety in the Dive Industry: Part 2
October 3rd, 2019
Preventing fires is paramount, but we need to be prepared to deal with fire emergencies when they occur....  Read More
by DAN Team
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Conservation Photography
July 16th, 2019
The power to change the world lies with us as users and caretakers of the planet....  Read More
by DAN Team
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Pinched Nerves
July 13th, 2019
The pain in your thigh is not likely related to a snug-fitting wetsuit. ...  Read More
by DAN Team
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Five lessons for Cold-water Diving
April 5th, 2019
Staying dry and layering with proper undergarments — along with the layer of air between the suit and your body — provide warmth. Consider these five lessons to prepare yourself for this interesting a...  Read More
by DAN Team
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Zeljko Dujic: Finding his niche in Breath-hold Research
April 4th, 2019
At the forefront of the field, Dujic continues to study the body’s physiological responses to breath-hold diving. Both divers and patients with conditions such as sleep apnea and diabetes benefit from...  Read More
by DAN Team
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How to plan for your dive trip
June 11th, 2018
This Smart Guide is a quick and easy reference tool to help you prepare for your dive travel to local and international destinations....  Read More
by DAN Team
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Injuries due to Exposure - Dehydration and other concerns
June 11th, 2018
Dehydration is often suspected when someone feels unwell after having been physically active and sweating profusely in a hot, humid environment....  Read More
by DAN Team
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Injuries due to exposure - Altitude sickness
June 11th, 2018
Traveling to high altitudes exposes travelers to increasingly rarefied air and progressively decreasing amounts of oxygen, resulting in declining levels of oxygen in the blood and thus impaired physic...  Read More
by DAN Team
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Emergency Oxygen units
June 7th, 2018
In a diving emergency, oxygen first aid can save lives (See "First Aid Refresher"), but only if the emergency kit is fully charged and in good operating condition. Proper maintenance is vital, especia...  Read More
by DAN Team

Categories

 2021
 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 DiseaseJuggling Physical Exercise and DivingSeasickness Prevention and TreatmentMember to Member: Guidelines for SeniorsHigh-Pressure OphthalmologyOver-the-Counter Medications
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