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Diving Safety Officer

NEW SAFETY PROGRAMME LAUNCHED

In addition to assisting injured recreational scuba divers, the primary mission of DAN-SA is for every dive to be accident and injury free. To realise this vision, the Diving Safety Officer Programme has been introduced.

DAN-SA has previously introduced a global campaign which focuses on equipping dive operators with the knowledge needed to identify and mitigate the risks associated with their respective dive operations – the Hazard Identification and Risk Assessment (HIRA) Programme. In turn, this requires a programme that creates awareness, improves risk management, and ultimately mitigates health and safety risks. As a result, the Diving Safety Officer (DSO) Programme has been developed. DAN-SA intends to guide all diving businesses to establish a culture of safety.

Every programme needs a champion: someone who will pay specific attention to the manner in which the diving business and its related operations work. This person needs to be dedicated to establishing, monitoring, improving and maintaining the systems needed. This is the DSO’s function. One can define this responsible person in terms of their tasks, their position within the business or organisation, their skills and competences, and their ability to understand, implement and manage the culture of safety. To be equipped to deal with these divergent and often complex issues, some degree of specialised training, followed by sufficient experience, is needed. Is this all really necessary? What are the risks to the business owner, the club manager or any diving enterprise manager that we are so concerned about? How should we structure a programme to help the responsible person deal with all of these? These are all good questions. So, before delving into the DSO Programme, let us briefly review the governing concepts of HIRA and its ultimate goal, namely a culture of safety.
The HIRA CONCEPT: HOOW IT WORKS

The concept of HIRA is not unique to DAN-SA. This approach applies to almost every industry, all with their own unique risks, dynamics and potential consequences. Our challenge, however, is to render this process into something that the diving industry can relate to; something that addresses the real issues that may compromise specific recreational diving-related activities, often unique to geographic locations and even socio-economic realities.

Once the basic HIRA process is completed, targeted risk mitigation follows. The steps taken must then be monitored to ensure the effectiveness of the process. In summary, we can refer to this as HIRA Mitigation and Monitoring (HIRA-MM).

In previous Alert Diver issues, we explain these concepts and provide descriptions of the areas within a dive business that require risk analysis. For now, however, we will only be providing a brief summary of the HIRA process as a necessary foundation of the DSO Programme.

The difficulty is being able to comprehend how this applies to a business, combined with the fact that everyone in the business is usually overloaded with their daily tasks. Most dive businesses simply do not have enough hours in the day to get to everything, let alone accommodate what might be thought of as extra red tape. Thus, for all this to work, HIRA-MM needs to be understood and appreciated within the context of what is already happening.
Most dive businesses have slow seasons, allowing them to better dedicate time to other tasks. This is usually when they are busy with staff education and making improvements for the next season. This period is the ideal time for the DSO to focus his or her attention on HIRA-MM. This can be done by following these four steps:

Identify potential hazards within the diving industry, including the probable causes of accidents and injuries that might affect people or resources, and those hazards that may affect the business and the marine environment.

Analyse these potential hazards for relevance: how real and important are they? So, this step is about putting first things first.

Create and implement the most suitable mitigation strategy for each of these identified and analysed hazards.

Assess the mitigation strategy for relevance, sensibility, usefulness and effectiveness. Ask yourself whether accidents or near misses are still happening. If they are, why are the mitigation steps not working and can the steps be improved or changed? Also consider whether people are adhering to the mitigating steps in an effort to make the operation as safe as it can reasonably be expected to be. This is where the expertise of the DSO comes in.

Appointing a DSO who is properly trained to understand and apply the required steps, to monitor these, and to advise management of the overall status, is clearly an excellent solution and completely in line with how occupational health and safety programmes are intended to work.

A CULTURE OF SAFETY

The term “a culture of safety” can best be explained by considering the four aspects of this concept.

Commitment: Without complete management commitment to safety, the programme is a non-starter. Management needs to decide on the necessity and potential consequences when weighed up against how much risk they are prepared to take.

Concern: There needs to be a shared care and concern for risks, especially their potential impact upon people, the business’ resources and, of course, the environment – the core attraction that exists to generate business.

Consciousness: An ongoing, realistic and educated approach to risks is required; understanding the risks allows people to then accept their responsibilities.

Consistency: There needs to be a sustained effort and continual reflection of practices through monitoring, analysis and of course feedback that leads to improvements and, ultimately, maturity.

With this culture in place, all activities to improve safety become completely natural and present in daily activities: staff will do this continuously without even thinking about it. It needs to become a completely natural part of all the business’ activities.

THE DIVING SAFETY OFFICER PROGRAMME

To establish a realistic, appropriate HIRA-MM process that leads to an effective culture of safety and adds value to the business, an individual with comprehensive training in all the aspects that relate to safety and quality is required.

We have identified the following areas of training to equip DSOs with the knowledge and skills required to manage their job function with the necessary confidence. Admittedly, it is a rather daunting task, but if the concept is introduced as a gradual process, rather than a single goal and outcome, maturity, competence and understanding will follow.

HIRA: The core of the culture of safety

The DSO needs to understand how to apply the HIRA-MM process to the business, both on site and at sea. There are several critical areas to consider, but the outcome will be a safe operation with a limited amount of risk exposure to the business and, of course, to the owners, management and instructors.

The culture of safety not only benefits the clientele, but it also spills over towards impacting their behaviour in risk mitigating ways even after they have left. A good example of this is that if re-hydration after diving is actively encouraged by staff, with the necessary resources to make access easy, clients are much more likely to comply. Everybody wins.

Legal matters: How to steer clear of crossing the legal boundaries

In order to mitigate and hence avoid client, staff and public liabilities, it is important to understand the different liabilities as well as the impact these can have on a business. Each country will have its own laws, and each territory, state or even municipal district might have additional regulations. This requires careful consideration, especially in cases in where a business would like to expand into other areas. One needs to know which laws apply and how to comply with them. In the case that some activity or operation falls foul of the law, a suitable action plan is needed in order to acquire the right assistance.

The insurance realm: The right protection when you need it

Most people tend to resist paying for insurance. There are several aspects to and types of insurance, and a healthy and well-protected business needs to at least consider these. Client insurance is certainly not the only cover that is needed.

Clearly, DAN-SA membership is a form of health cover(1) for all divers in need. There are applicable exclusions and limits that need some understanding too. Remember that both staff and clients need cover while diving or engaged in any related activity. This benefit offers a degree of mitigation but you need to ensure that you carefully manage all areas where risks still exist.

All businesses need some degree of equipment, building, transport, watercraft and asset cover; this is usually referred to as short-term insurance. Even more appropriate in today’s litigious environment is an understanding of civil and personal liability, restitution and compensation, which is essential in order to attain the right form of protection. Also remember that South Africa has introduced the Consumer Protection Act, 2008 (Act No. 68 of 2008) to define both liability and responsibilities for businesses – whether they provide services, sell products or other paid-for activities. The definitions provided by the act need to be adequately understood too.

Finally, we have business and personnel insurances, where there are always exclusions and exposures that cannot be insured for, requiring additional mitigation steps. Insurance for illegal or non-compliant activities is not available: these risks can only be mitigated through an understanding of laws and regulations, and by using well-considered risk management procedures. A good example of this is a business conveying clients to dive sites where the business’ driver does not hold the necessary professional driving permit.

Occupational health and safety: Taking care of staff

The employment of any person carries with it the responsibility to ensure a safe working environment, irrespective of whether they are a full-time employee, a seasonal or temporary worker, or even a short-term human resource.

Contract terms and conditions do not supersede local laws or their regulatory environments. Businesses carry the responsibility of complying with the appropriate regulatory environment and the DSO needs to clarify this for each business:

Which regulations apply to the different aspects of the business?
What is classified as an occupational hazard, disease or injury?
How does the state cover such risks to employees(2)?
What compensation exists and where are there gaps?

A comprehensive health and safety plan is clearly what is needed here.

Medical issues: An understanding of the risks of diving

DSOs are not required to be healthcare professionals. However, they do need a basic understanding of diving risks. Without this, any safety programme and its mitigating instructions would be incomplete. Some of the essential questions are:

What are the most common and the most serious medical complications to be encountered and how would each be dealt with? For example, sea lice stings versus gas embolism.
What are the main contributing risk factors for decompression illness (DCI), and how should this be treated if it were to arise? For example, dehydration in tropical climates, or flying after diving.

What other medical conditions are most likely amongst the clientele that may cause problems or present abnormal symptoms and signs, irrespective of any diving activities? For example, luxury resorts are likely to attract older, more well-established individuals, a group that is generally associated with cardiac risk factors.

What is reasonable and appropriate for an effective initial emergency response and stabilisation on-site versus what may be deferred to local healthcare systems? For example, should an automated external defibrillator be kept on-site or can the ambulance service respond promptly enough?

What travel medical concerns need to be considered? Many popular diving destinations are relatively remote and are often only accessible by air travel. In addition, there may be certain endemic diseases (such as malaria) or certain mandated health precautions (such as yellow fever vaccinations), or other precautionary measures to consider.

Emergency planning: When things do go wrong

The DSO needs to analyse which of the existing risks require immediate action so as to limit the extent of an adverse situation. These may be present at sea, on the beach, in the workshop, in the cylinder filling station and so on.

Emergency plans need to be concise so that staff can react without needing to think. These plans need to contain possible emergency situations. The staff members responsible for compiling these procedures may need a degree of guidance; in some cases, the DSO might draft these for approval by the relevant manager. One cannot underestimate the value of practising these procedures. Only regular and realistic drills will ensure that staff can perform under pressure without needing to think about what steps are needed.

The recompression chamber: What you need to know

Few diving facilities have local recompression facilities on site. Hence, the DSO is unlikely to need any detailed background as to how these operate.

There are, however, a few things that the DSO needs to know in order to be able to establish effective emergency procedures when recompression is needed. These include the basic operation of a chamber, how to tend to the patient inside the chamber, what medical considerations and potential emergency situations need to be considered, and what the resulting safety action plans would be.

The technical support aspects of diving equipment: The nuts and bolts

The DSO may or may not have training or experience in diving-related equipment, such as regulators, high pressure filling systems, gas blenders, cylinders, oxygen cleaning and exposure considerations, to name but a few.

Keeping equipment in good and safe working condition through effective maintenance is a key aspect of a safety programme.

In order to be able to implement or at least assess a sound maintenance programme, the DSO needs to understand the basic construction and operation of the main items of equipment used in a dive business. The best way to demonstrate that maintenance has been performed is the completion and retention of these records. Many a legal issue has been avoided where effective maintenance has been demonstrated.

Business planning and sustainability: A secure business is a safe business

Those who fail to plan, plan to fail. There is almost no place more subject to this than a business. For any business to be financially secure and remain well resourced, it must have a plan of action for adverse business events. It should allocate an appropriate investment in safety, and provide financial and legal assurance in the event of accidents. The DSO should at least be able to assess what makes a sustainable and a responsible business. To achieve this, a solid business plan needs to be in place.

Ecological responsibilities: Protecting the environment that attracts divers

Ecological awareness and protection of the ecology is the business’ responsibility. Whenever excursions are made into these often highly sensitive areas, it should be understood that preservation is part of business protection. To jeopardise the environment is to place the business in danger. Staff members need proper instruction and clients need to be educated in order to protect the environmental assets.

Monitoring your safety programme: An essential way to build a safety culture

Monitoring and measuring should not be done without good reason. The objective is not to keep people busy; it is to ensure safety. Any abnormal findings should be reported to management as part of the safety programme. The DSO should, therefore, understand and be able to communicate the importance of those aspects of the operation that require monitoring. This is important, not only for the sake of clients, but for the staff as well as the business’ health as a whole. Analysis and reporting of results should be used to maintain awareness and improve education on health and safety.

The health and safety manual: Where all the safety plans are to be found

Understanding the essential elements of the health and safety manual, and then compiling or at least reviewing this compendium for effective safety management, is an essential task for the DSO.

The organisational structure and delegations of responsibilities to specific personnel explain the overall business safety management strategy.
The business “health” assessment should be an integral part of this documented process. Important reporting forms, assessment and monitoring instructions, maintenance schedules, liability-reducing registration documents, and client and staff instructions should be collated here.

Finally, a policy for the maintenance of important records should be in place to provide assurance of proof of a solid health and safety system.

THE PROFILE OF A DIVING SAFETY OFFICER

No person can operate successfully in a position where the business and personal expectations of their position are not clear. Knowledge, experience, personality traits and skills define their competence: a decision that must be taken by management.

Of course this person’s position within the organisation needs to be clear too. It is the owner or the manager who is ultimately responsible for safety – not the DSO. The DSO’s job is to assess, advise, steer and monitor safety. This implies that they need to be free to report on any issue without prejudice to their position or employment.

The DSO is a trained and knowledgeable person, requiring not only proper appointment, but perhaps also an individual career path. They can be a part of the business, or an external, independent consultant. This depends on the scope and amount of work required to promote and grow a business’ culture of safety.

WHY IS DAN-SA OFFERING THIS TRAINING PROGRAMME?

The role of a DSO is an extension of the mission of DAN-SA to prevent injuries. As such, DAN-SA has made the strategic decision to develop the DSO Programme that we hope will equip those individuals who assume this vital role with the optimal level of competence and confidence to perform this function well. Ultimately, the employer or contracting party will have to determine whether or not a DSO is competent.

What DAN-SA wants to ensure is that the requirements, responsibilities and resources actually match up in the individual a business decides to select. As such, this programme meets the requirements for official certification by both diving education and certification organisations, as well as our own Department of Labour. Successful candidates can expect to be recognised formally and internationally for their skills and qualification – significant recognition indeed.

For more information about the DAN-SA DSO Programme, contact the DAN-SA office on 0860 242 242 or email training@dansa.org
FOOTNOTE: DAN-SA is actually the insured party; if a member is injured, the insurance benefit payable to DAN is simply extended to the member. DAN-SA does not sell insurance to its members. 

FOOTNOTE: 2. Most countries enact some form of occupational health and safety (OHS) compensation for both injuries and diseases; businesses therefore need to be registered for such compensation schemes and failure to do so would be an illegal act that cannot be insured for: the liability thus falls on the business and its owners.

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2 Comments


Peter Southwood - February 10th, 2024 at 8:25pm

In the context of South Africa, what organisations would employ a diving safety officer? This is not a qualification or position authorised by the Diving Regulations, so does not apply for scientific or commercial diving. I assume it would be in a recreational diving business, as that is all that is left.

- February 15th, 2024 at 11:06am

DAN Southern Africa is a non-profit organisation, providing emergency services to scuba divers and other divers in distress. Our mission is to make diving safe and to try to prevent accidents. We offer comprehensive first aid training for diving emergencies on a semi-commercial basis where independent professionals provide and charge for the training, using our materials. Other training is either without charge or a nominal fee unless provided by independent instructors.



At present the DSO program is not yet available within the DAN Southern Africa region but we have plans to launch an introduction training workshop later this year. The DSO program was designed to assist in creating a culture of safety within recreational and technical dive businesses, in order to prevent accidents and better prepare businesses to deal with emergencies. The focus is not on in-water activities but in essence everything from sign-up, staff health and safety and from when the divers enter the water until they exit. It covers compressed gas stations, workshops, environmental safety and all other activities. There are 22 topics included in the program, and it is an intensive 40 hour course.



The program is based on occupational health and safety principles, and while not formally recognised, would provide scientific and other professional diving organisations with everything they need to ensure safe diving operations. It is not intended to apply to commercial diving. We do not include surface supply, mixed gas and bounce diving, or saturation diving operations in our materials. Maintenance and other specific skills, where training is available elsewhere, is also excluded. However, all the other activities, including occupational health and safety of all dive business employees divers are included.



We do not seek either statutory or industry-specific accreditations (IMCA, ADCI or other). These are very costly and do not fall within our organisational mission. While the training is entirely applicable, a lot of it is based on recreational, technical, scientific and professional diving.



Dive certification is entirely excluded - scientific and professional divers need to be qualified in accordance with the Diving Regulations under the OHS Act as either Class V or VI divers. However, we do provide emergency assistance to all divers, and all divers, including commercial divers utilise our services when subscribed as members.



Having said all of this, the scope of the DSO course outside of actual diving activities is entirely applicable to all diving. Noise, lighting, air quality, compressed gas filtration, oxygen system safety, emergency action planning, general occupational health and safety, environmental sustainability, basic recompression chamber operations and some diving medicine is included. The primary underlying principle in all of this is comprehensive risk assessment of everything that a dive business or professional undertakes.



Finally, to answer your specific questions, our intention is to train and qualify a DSO for a scuba diving business primarily serving recreational and technical divers. The DSO can be a freelance, fee-for-service professional, employed by a dive business, or utilise the training to better equipment themselves for a safety officer or professional career where diving is included. In the USA, organisations that manage aquariums, university scientific programs, the American Association of Underwater Sciences and other related organisations all subscribe to our program, as there is nothing else out there that is on offer and is as comprehensive.



In your specific case, it could be for education only, but would certainly better equip you to be appointed as a DSO. As it excludes in-water operations, it is suitable for all surface activities.



We trust that this provides you with enough information to understand the program.

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O2 providers O2 servicing O2 treatments O2treatments OOxygen maintenance Ocean Alliance Ocean Projects Ocean Research Ocean animals Ocean clean up Ocean community Ocean conservation Ocean life Ocean mammals Ocean migrations Ocean pollution OceanX Oceangate Ocean Octopus Oil contamination Olive Ridley Open Ocean Open water divers Operatorethics Optical focus Oral contraseptives Orbital implants Oronasal mask Osteonecrosis Otters Out and about Out of air Outer ears Outreach Overhead Envirenments Oxygen Administration Oxygen Cylinder Oxygen Toxicity Oxygen Units Oxygen deficit Oxygen deicit Oxygen dificiency Oxygen ears Oxygen equipment Oxygen explosions Oxygen kit Oxygen masks Oxygen providers Oxygen safety Oxygen supplies Oxygen supply Oxygen systems Oxygen therapy Oxygen treatment Oxygen P J Prinsloo PADI Freedivers PFI PFOs PFO PJP Tech PTSD Paper Nautilus Paralysis Parentalsupervision Part 3 Partner Training Patent foramen ovale PatentForamen Ovale Pemba Island Peri-peri Divers Personal Perspective Petar Denoble Peter Lindholm Philippine Islands Philippines Phillipines Photographers Photographer Photography tips Photography Physical Fitness Physioball Physiology Physiotherapy Pills Pilot Whale Pistons Planning Plastic pollution Plastic Plimsoll Interface Pneumonia Pneumothorax Poison Pole fishing Polka Dot Bat fish Pollution Pool Diving Pool chemicals Pool maintenance Pool workout Pools Post traumatic Post-dive Potuguese man-of-war Pre-dive fitness Pre-dive Predive check Pregnancy Pregnant divers Preparation Prepared diver Press Release Preventions ProDive Port Elizabeth Product scuba nudi Professional rights Protection Provider course Psycological Pulmanologist Pulmonary Barotrauma Pulmonary Bleb Pulmonary Edema Pulmonary Hypertension Pulse Punture wounds Pure Air Pure Apnea Purge Quit Smoking Q RAID South Africa RCAP REEF RMV ROS Radio communications Range of motion Rashes Ray Dalio Reactive oxygen species Rebreather diving Rebreatherdive Recces Rechargeable batteries. Rechargeable Recompression chamber Recompression treatment Recompression Recreational dives Recycle Red SEA Reef Chcek Reef Conservation Reef Environmental Education Foundation Reef protection Reef safe Reef surveyors Refractive correction Regal Sea Goddesses Regulator failure Regulators Regulator Remote areas Remote dive locations Remote islands Renewable Rental gear Report incidents Rescue Divers Rescue Procedure Rescue breathing Rescue breaths Rescue diver Rescue skills Rescue skill Rescue training Rescue Researcher profile Research Respitory Minute Volume Resume diving Return To Diving Return to diving Reuseable items Review Rhinopias Risk Assessments Risk assesments Risk assessment Risk elements Risk management Risk mitigation Risks of Seizures River diving Riviera Maya Roatan Marine Park Roatan Ronblom Rubber ducks Ryan Capazorio SABS 019 SAC SMB SRC SafariLive Safe diving practices Safety Concerns Safety Divers Safety Gear Safety Stop Safety in Air Safety SaherSafe Barrier Salisbury Island Salish Seas Salty Wanderer Sanitising Sanne Volja Sara Andreotti Sara Banderby Sara Campbell Sardine Run Sargassum sea Saturation Diving Saturation diver Save our seas Schrimps Science of diving Science Scoliosis Scombroid Poisoning Scorpion Fish Scuba Air Quality Scuba Guru Scuba Injury Scuba Instructor Scuba children Scuba divers Scuba dive Scuba diving Scuba education Scuba gear Scuba health Scubalearners Scubalife Sea Horses Sea Turtles Sea rescue Sea slugs SeaXplore Sodwana SeaXplore Seafrog Seagrass Sealcolonies Sealife Seals Seasickness Seaweeds Seaweed Sea Self Rescue Send Nudi Shallow Water Blackout Shallow dives Shark Protection Shark Research Shark conservation Shark diving Shark specialist Sharks Shipwrecks Shit Happens Shore entries Shoulder strength Sidemount Sideplank Signalling devices Signs and Symptoms Silty bottoms Sinda da Graça Sit-ups Sixgill Sharks Skills in action Skin Bends Skin outbreak Skin rash Smart phone photography Snells Window Snorkeling Snorkels Social Distancing Sodwana Bay Sodwana Solomon Islands Sonnier bank South Africa Southern Sea Otters SpareAir Special Operations Special forces units Sperm Whales Spinal Bend Spinal bends Spinal cord DCS Spinal dura Spinal pain Spinner dolphins Spleen Splits Sports medicine Squeezes Squid Run Stability exercise Stage cylinder Standars Static breath hold Statin Mediction Stay Fit Stay Warm Steel Stefan Randig Stents Step ups Stephen Frink Stepping up Stobes Stockton Rush Stonetown Stretch band exercise Stretch bands Stretching Strobe Lighting Strobes Stroke Submerge tech Submerged Sudafed Sulawesi Sun protection Sun screen Sunscreen Supplemental oxygen Surface Air Consumption Surface Consumption Rate Surface Marker Buoys Surface supplied Air Surfaced Surfers Surgeries Surgery Survivor Suspension training Swim Fitness Swimmers Ear Swimmers health SwimmingIn wateractivities Swimming Sylvia Earl Symbiosis Symbiosys TRavel safety Tabata protocol Talya Davidoff Tank valve Tanzania Tara Panton Tattoes Tchnical diving Team Awareness Tec Clark Tec divers Tec diving Tech diving Technical Diving Technical diver Technical divng Temperature Homeostatis The Bends The Cavettes The Produce The Titanic Wreck The Wild Coast The greatest Shoal The silent world The truth Thermal Notions Thermoregulation Thomas Peschak Thresher shark Thunder Bay National Marine Sanctuary Tides Tips and trick Tonga Tooth squeeze Transplants Trashbag Trauma Travel Safe Travel destinations Travel smarter Travel tips Travel Tropical Coastal Management Tulamben Tullum Tulum. Tumbatu Island Tuna Tunnelling Turks and Caicos Turtles Tweezers Tyrone Lubbe UNDERWATER CLEANUP Ultrsound Umkomaas Unconscious ascent Unconscious diver Unconsciousness Underground waterways Underground work Underseaa world Underwaater Photos Underwater Photography Underwater Photograper Underwater Photograpgraphy Underwater Photographer Manirelife Underwater Photographers Underwater Research Underwater camera Underwater conservation Underwater critters Underwater floral Gardens Underwater hockey Underwater imaging Underwater lights Underwater models Underwater photographer Underwater photography Underwater photos Underwater pho Underwater sound Underwatercommunications Underwater Underwtaer photography Undwater housings University of Stellenbosch Unresponsive Urchins Urinary retention. 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Virus infections Volatile fuels WWII wrecks War stories Wash gear Washout treatments Wastewater Watchman device Water Resistance Water Weakness Weck Weigang Xu Weightloss Weights West Papua Western Cape Diving Wet Lenses Wet diving bell Wetsuit fitting Wetsuites Wetsuits Wetsuit White balance Whitetpped Sharks Wide Angle Photos Wide angles Wildlife park Wildlife Winter Wits Underwater Club Wolf Eels Woman and diving Woman in diving Woman's Health Womans health Woman Women In Diving SA Women and Diving Women in Freediving Women in diving Womens Month Womens health Work of Breathing Workout World Deeepst Dive Record World Records Wound dressings Wreck History Wreck divers Wreck dive Wreck diving Wreck exploration Wreckdiving Wrecks Wrist technology Yachts Yoga Youth diver Yvette Oosthuizen Zandile Ndholvu Zanzibar Zoology Zooplankton \ Blennies abrasion absolute pressure acoustic neuroma excision adverse seas air-cushioned alert diver altitude alveolar walls anemia antibiotics anticoagulants antiseptics ascent bandages barodontalgia bent-over barbell rows bioassays biodiversity bloodcells blue carbon body art breathing air calories burn canal blockage cannabis oil carbon dioxide toxicity cardiovascular career developments cerebrospinal fluid cervical spine checklist chemo port children child chronic obstructive pulmonary disease clearances closed circuit scuba compressed gass coral growth corrective lenses crystalweed currents cuts cylinder filling daggaolie dagga dead lift decompression algorithms decongestants decongestion deep dive training dehydration discovery dive clubs dive injuries dive medicing dive ready child dive reflex dive tribe divecomputers diver in distress diver rescue diver training dive diving attraction diving hoods doctors dolphns domestic travel dri-suits drowning dry mucous membranes dry suits dry e-cigarettes ear spaces earplugs ears elearning electrocardiogram electrolyte imbalance electroytes emergency action plans emergency assessment emergency training environmentally friendly equalising equalizing exposure injuries eyes fEMAL DIVERS fire rescue fish watching fishingline fitness Balance fitnes flexible tubing frediving freedivers gas bubble gas poisoning gastric acid gene expression health heartburn heron bridge histidine hospital humidity hypobaric hypoxia immersion and bubble formation immersion pulmonary edema (IPE informal education isopropyl alcohol jaundice join DAN knee lanyard laparoscopic surgery life jackets longevity lower stress lox oxygen level lungs malaise mamalian effect marielife marine pathogens medical Questions medical issues medical procedures medical risk assesment medications mental challenge mental preparedness micro-organisims micro minor illness mucous membranes multilineage dysplasia myelodysplasia nasal steroids nasal near drowning nematocysts neurological newdivers nitrogen bubbles no tanx off-gassed operating theatre operations orthopeadic otitis media out planting outgas pain parameters perforation phillippines phrenic nerve physical challenges pinched nerves plasters pneumoperitoneum polyester-TPU polyether-TPU post dive posture prescription mask preserve prevention professional emergency responders proper equalization psychoactive pulmonary barotrauma. pulmonary injury. pulmonary oedema pulmunary barotrauma pure oxygen radiation rebreather mask rebreathers retinal detachment risk areas safety stops saturation scissors scuba equipment scuba sea goddesses single use sinus infections situationalawarenes smoking snorkeling. spearfishing spliff sterilising stings strength sub-aquatic sunscreen lotion swimmer's ear swimmer\'s ear swimmers ears tattoo care tecnical diver thermal protection tissue damage toxicity trachea training travel Insurance trimix tympanic membrane unified standards upcycled upwelling virtual coach vision impaired vomiting warmers water quality zinc oxide