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 Need motivation? Joel Stransky stood on the podium at the Cape Epic, a year after being in ICU 2018-04-12 10:30 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 Parenting Does mom's dagga end up in breast milk? News SEE: This surprising group is at risk of getting Listeriosis Medical A quick guide to sinus-related congestion Fitness The genius ab exercise that all gymnasts use, but everyone else ignores News SEE: 6 body parts that can alert you to major health problems News Most SA claims are for this dread disease From our sponsors WIN a R2 000 beauty voucher! Understanding diabetes self-management Fed up with the Phlemings? Let’s chat diabetes and erectile dysfunction Live healthier FYI » When the flu turns deadly Why the flu makes you feel so miserable Could a deadly flu strain hit SA this winter? Following an intense flu season in the US and UK, should we be worried about our own upcoming flu season? Alcohol and acne » Dagga vs alcohol: Which is worse? SEE: Why you are drinking more alcohol than you realise Does alcohol cause acne? Some foods can be a trigger for acne, but what about alcohol? Dermatologist Dr Nerissa Moodley weighs in.