Home > Fitness > News Updated 18 February 2014 Lost divers: 5 biggest dangers Five of seven missing scuba divers in Indonesia have been found. Here's more about the dangers they would have faced during their four days in the water. 0 iStock take a Flexibility test » Receive Health tips » Ask Fitness Expert » Join Health24 on Facebook » 10 minute bikini-ready workout Why you need strength to run Five of the seven missing divers have been found alive in waters off Indonesia. They disappeared on 14 February while diving off Bali's southeast coast and were only found on 17 February.Here's more about the main dangers they would have faced:The most obvious would have been drowning. Even good swimmers can only keep going for so long, and in rough seas anyone can drown. If someone is unconscious when hitting the water, chances of drowning are extremely high.After a short while, hypothermia becomes a problem. It is not possible for someone in the water to maintain their body temperature for any length of time – especially if they are not wearing a wetsuit. In very cold seawater (between 0.3 and 4.4 degrees Celsius) hypothermia can set in within minutes 30 minutes and expected time of survival is between 30 and 90 minutes. Indonesia's oceans are warmer, so the divers probably could keep going for quite a while. In relatively warm water (up to 21 degrees Celsius) survival time is anything from 2 – 40 hours - without a wetsuit..Then, of course there is always the possibility of a shark attack. Indonesia's waters teem with both sharks and rays, and in a recent survey, 20 new species have been discovered in this area. Although humans are not at the top of sharks' list of preferences, sharks will investigate anything out of the ordinary – such as a human splashing on the surface of the water.Dehydration is a major problem to people caught in ocean water. Obviously salt water is not for drinking as its concentration of salts is up to 220 times that of fresh water. Drinking of sea water will hasten the process of dehydration considerably.Sunburn can be deadly, but usually it takes a day or two for this to become a real problem to someone in a situation such as this. Excessive sunburn can lead to further dehydration.(Sources: seagrant.umn.edu; expeditionfleetblog, Health24;www.utah.edu) Susan Erasmus NEXT ON HEALTH24X How Kelvin Trautman trains to be one of the best action photographers 2018-09-02 16:00 More: FitnessNews advertisement Read Health24’s Comments Policy Comment on this story 0 comments Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... Other news Medical Exercising with allergies – what you should know Medical Do therapists need therapy? Lifestyle Scientists closer to drug that cuts nicotine dependence Diet and nutrition Gluten-free craze: But what about people who really can't have gluten? News Drug addicts target patients for their medication News Health dept commits to resolve critical ARV shortages before year end From our sponsors Dementia and Incontinence: what you need to know Tell-tale signs you need a mattress upgrade Keen to win a R2 000 voucher? Good health begins in your gastrointestinal tract Live healthier Gut health » Can't lose weight? Blame it on your gut Our nutrition experts weigh in on why gut health is such an important factor in weight loss, on World Obesity Day. Sleep better » Yes, there is such a thing as too much sleep A new study confirms that too little sleep can impair your brain, but interestingly, too much sleep is also a problem.