Posts with the category “alert-diver-fall-editions”
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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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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
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On a Mission: Critter hunting in Washington’s Salish Sea
November 30th, 2021
There’s a big difference between casual, submerged sightseeing — happy-snapping pictures of whatever you run across while blowing bubbles — and diving dedicated to carefully searching select sites, so... Read More
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Inspecting and Testing Scuba Cylinders
November 25th, 2021
After cylinders first enter service, an annual visual inspection and a five-year hydrostatic test are required. These requirements include cylinders used for diving and other life-support applications... Read More
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Rescue Skill Modification
November 25th, 2021
Techniques for rescue diving seemed suited for people with a different body type and skill set — at 5 feet, 4 inches tall, I am a petite woman. Practicing rescues was challenging at best and near-impo... Read More
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Sound in the Silence
November 25th, 2021
Audible cues and signals can get your buddy’s attention, signal a group of divers or indicate a problem you can help address. Even though we may dive to escape the noise of everyday life, we need to p... Read More
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Answering the Call
November 25th, 2021
In Wild Seas, his new book published by National Geographic, Thomas Peschak ponders his career path: “My life as a National Geographic photographer has been socially isolating, emotionally exhausting ... Read More
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Celebrating Seagrass
November 25th, 2021
The benefits of protecting seagrass cannot be overstated. Seagrass purifies the water, helps protect against coastal erosion, helps sustain small-scale fisheries that support communities, and increase... Read More
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Photography in the Plimsoll Interface
November 23rd, 2021
Underwater photographers sometimes refer to the narrow water zone where a subject splits the surface as the Plimsoll interface. Opportunities abound here for dynamic shots achieved by angling the came... Read More
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Immature Blood cells
November 19th, 2021
Platelets are components within our blood responsible for beginning clotting. Decreased platelets will inhibit clotting, which may lead to uncontrolled bleeding. If you have bleeding from blunt or pen... Read More
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PFO CONCERNS IN DIVE INJURY TREATMENT
November 19th, 2021
A PFO is undoubtedly a concern with diving because about 25 percent of the population has one. The recovery position supports and maintains an open airway in an
unconscious person or injured diver. ... Read More
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DAN SUMMER RESEARCH INTERNSHIP
November 19th, 2021
More than 100 interns over 20years have participated in DAN’s internship programs, working
with established mentors in research, risk mitigation or medicine to gain knowledge and valuable professional... Read More
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Shore Thing A HOW-TO GUIDE FOR ASPIRING BEACH DIVERS
November 19th, 2021
Aside from allowing me to avoid that sunrise alarm, shore diving offers other freedoms as well: the last-minute choice of a dive site, the ability to do two-hour dive without worrying a boat crew and... Read More
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It Can Happen to Anyone
November 19th, 2021
Our divemaster immediately gave me 100 percent oxygen and notified the captain. We quickly returned to the resort dock. At some point during the ride back they had called to shore and contacted DAN, w... Read More
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The Blue Desert Conundrum
November 19th, 2021
Crystal-clear, nutrient-richwaters may exist in polar seas in the darkness of winter, but elsewhere nutrients in the presence of sunlight nourish phytoplankton, which turns the water green with chloro... Read More
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Seeking an Octopus
November 19th, 2021
New data can show that we aren’t quite as good at understanding nature as we think. New findings can cause us to reassess what we think we know about the beautiful and immensely enigmatic underwater w... Read More
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Finding Your Fitness
November 19th, 2021
Recreational scuba diving is generally categorized as moderate physical activity, but circumstances can make it high intensity. For reference, other examples of moderate activity are a brisk walk on a... Read More
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Sea Turtles of the World
October 30th, 2021
The world’s sea turtles are a far-ranging, deep-diving, long-enduring and truly diverse group of animals. Some are carnivores; others are herbivores. Some are pelagic, while others are coastal. Most a... Read More
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Experience
April 15th, 2021
Date: 16 November 2016 | Author: Karl Shreeves Although it is clear that diving experience reduces divers’ risk of injury, experience is an imprecise term that conjures different ideas in different pe... Read More
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Evaluating Oxygen Delivery with a Demand Valve
December 8th, 2020
Oxygen systems commonly used for dive accidents can have two delivery options: a pressure-activated demand valve or constant flow for use with a nonrebreather mask.... Read More
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Studying Deep reefs and Deep divers
June 17th, 2020
While remotely operated vehicles (ROVs) and submersibles can be used at these depths, they have some shortcomings. Manned submersibles and support ships can cost more than $50,000 a day. The limited m... Read More
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Asking the Right Questions
June 17th, 2020
Dive safety has improved with the development of better equipment, procedures, education and awareness, but much remains to be learned about divers’ risk of decompression sickness (DCS)... Read More
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Lung squeeze under cold diving conditions
June 17th, 2020
Immersion Pulmonary Edema (IPE) is a multifactorial condition, largely a net effect of increased central blood volume, pressures within the chest and, for compressed-gas divers, increased breathing r... Read More
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Diving with a Purpose in National Marine Sanctuaries
June 15th, 2020
We desire to test our strength and expand our horizons. Many divers find their horizon along 100 miles of ancient coral reefs in the Florida Keys, a once-desolate island chain spreading southwest from... Read More
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Diving and Hepatitis C
May 14th, 2020
Divers encounter situations that involve sharing masks, snorkels, helmets and alternate air sources. It is reasonable to be concerned about sharing equipment with a diver who has HCV. A diver’s saliva... Read More
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The New Pointy end of Diving
May 11th, 2020
Freediving is now the fastest growing
segment of diving and is attracting a new audience of people who love the water and are into
fitness, self-improvement and mind-body awareness — in addition to th... Read More
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Out of the Blue
May 10th, 2020
People take pictures to render a scene with a literal perspective or as a medium to translate an abstract concept or feeling. I have spoken to photographer friends, read articles, and written many wor... Read More
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Research and Outreach
May 7th, 2020
“Data we gather on these projects is important, but our opportunity for outreach is priceless.” Studies have revealed that several external factors, including cold water, exercise and high work of bre... Read More
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Stock your First-Aid Kit
May 7th, 2020
Start with the Essentials
Commercially available first-aid kits for divers will provide you with a reasonable array of supplies that can be upgraded or augmented according to your circumstances ... 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
May
June
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 Equalisation