How long does it take for a body to bloat and decompose underwater?
147894
Depends on the tempertaure of the water amongst other things.
678456
I can hold it for only 39 seconds, but the average time for a person is 2 minutes. David Blaine is planning to hold his breath underwater for 9 minutes!
656787
A newly dead human being, or any other animal, will sink when placed in water.  After the gases of decomposition build up in the chest and abdomen, however, the body will inflate, rise like a hydrogen-filled balloon, and pop to the surface, sometimes dragging with it surprisingly heavy weights that a murderer might have thought sufficient to keep it down.   With the passage of time and further decomposition, however, the body cavities eventually rupture, the gas escapes, and the corpse goes down again, this time for good.\n\nThere is one notable exception:  sometimes, due to air caught in the clothing, a body will stay on the surface for several hours before sinking.
8406
A person can live without food for quite some time, usually for many weeks. The body will use its fat and protein stores (muscles) to help it survive. If a person has a lot of fat stores (is very heavy), they will live longer than a person who has very little fat (very thin), so how long a person can survive depends a lot of the person. Of course, if you go without food for a few weeks, you will be very weak since you have been using your own muscles for energy. \n\nWater is a different story. A person will die within 3-4 days without water. The size of the person really doesn't make much difference.
518156
22 seconds.  I've beens swimming for about 8 years now.
492027
Without a lifejacket, the boater will still most likely continue breathing, even if unconscience.  The body is trying to sink, but lungs filled with air will keep the body afloat.  If the person breathes in and his or her lungs fill with water, the person will definitely sink. However, after drowning, the gases in the blood stream accumulate, allowing the dead body to rise to the surface of the water.
686980
to allow time for digestion\nif u dont wait, u may cramp up and u wont be able to swim if the tide takes u out too far.\n\n\n\nActually, the recommendation \nto wait an hour after swimming probably should be applied to most forms of \nphysical exercise/exertion.  When you eat and the food gets into the \nstomach and then into the small intestine (where most of the work of \ndigestion and absorption takes place), the body 'pulls' extra blood into \nthe body's middle (around the internal organs), so that the nutrients can \nthen be transferred into the blood and sent to the rest of the body.  \nSince you have a fixed amount of blood in your body, the amount of the \nblood that is left in the outer muscles must then be less.  So, you have \nless blood in the large muscles that you need for exercise...and that \nincreases the chances for muscle cramping (due to the production of by-\nproducts, such as lactic acid, which are toxic to the muscles).\n\n     Dr. Titchenal also mentioned that maybe where the 'old wive's tale' \nabout waiting for swimming, in particular, originated because when you are \nswimming you are usually face-down.  This might make you more prone to \ngetting sick to your stomach and throwing up, because of the stomach being \nfull and your face is in the water.  I wonder if anyone ever tested this \nafter eating by swimming face down and then swimming on his/her back?\n \n     So, bottom line:  it may be a good idea not to exercise for about an \nhour after eating (particularly a big meal), regardless of the exercise.
645714
It depends to some extent on how long thy are exposed,  but  basically being exposed to a vacuum isn't drastically different to being held underwater. The person would simply suffocate. The human body is pretty tough and there aren't really enough airtight regions for a vacuum to cause much damage.\n\nResearch with chimps and monkeys suggests that if you were exposed to a virtual vacuum for less than 90-120 seconds you might not suffer any permanent damage.\n\n\nSome swelling of the soft tissue such as the eyes and roof of the mouth, but they will NOT explode. The lungs migh rupture if the person is silly enough to try to hold her breathe.
861130
A person flushed into space would remain conscious for about ten seconds and die in about ninety seconds.  It's best if I quote from the "Bioastronautics Data Book" from NASA:\n\n"Some degree of consciousness will probably be retained for 9 to 11 seconds (see chapter 2 under Hypoxia). In rapid sequence thereafter, paralysis will be followed by generalized convulsions and paralysis once again. During this time, water vapor will form rapidly in the soft tissues and somewhat less rapidly in the venous blood. This evolution of water vapor will cause marked swelling of the body to perhaps twice its normal volume unless it is restrained by a pressure suit. (It has been demonstrated that a properly fitted elastic garment can entirely prevent ebullism at pressures as low as 15 mm Hg absolute [Webb, 1969, 1970].) Heart rate may rise initially, but will fall rapidly thereafter. Arterial blood pressure will also fall over a period of 30 to 60 seconds, while venous pressure rises due to distention of the venous system by gas and vapor. Venous pressure will meet or exceed arterial pressure within one minute. There will be virtually no effective circulation of blood. After an initial rush of gas from the lungs during decompression, gas and water vapor will continue to flow outward through the airways. This continual evaporation of water will cool the mouth and nose to near-freezing temperatures; the remainder of the body will also become cooled, but more slowly. \n\n"Cook and Bancroft (1966) reported occasional deaths of animals due to fibrillation of the heart during the first minute of exposure to near vacuum conditions. Ordinarily, however, survival was the rule if recompression occurred within about 90 seconds. ... Once heart action ceased, death was inevitable, despite attempts at resuscitation...."\n\nNOT FUN would be my summation.  It bears mention that there are examples of people who have been exposed to vacuum and recovered with virtuall no ill effects and people who have died because they were exposed to vacuum.  They tend to fall very well within the guidelines laid down above.  For more information and accounts, follow the link.\n\nOf course, if you're just asking how long it's possible to live in a space station, then the answer is indefinitely.  The current record-holder for a space stay is Valeri Polyakov who stayed in orbit for 14 months.  It was only staying on Earth afterward that was the hard part.
1013414
ANSWER 1: When a person drowns, water takes the place of air in the lungs. The body becomes heavier and sinks. It stays there until enough gas builds up inside the body from bacterial decomposition to make it buoyant and free it from the suction that silt and mud creates on the river bed, so that it surfaces. \n\nHow long this takes depends on the depth and temperature of the water, the amount of sunlight the corpse receives, and whether it is lying under a ledge or a bridge. \n\nWhether the body is lying on the north or south side of a waterway can also affect the time it takes to rise, because heating of the water varies on each bank. \n\nObviously, the body can take longer to rise if it is underneath something like a tree, or is caught by an underwater obstruction. I once studied a body that had risen to the surface with part of a brick wall tied to it by ropes around the chest. There were five bricks covered with mortar on each side of the body and still it floated. \n\nWhat's more, if a body is trapped by, say, its leg, the gases will keep forming until it is buoyant enough to detach itself from the trapped leg and rise up. \n\nBodies can also be washed into the side of a river and remain undiscovered, below an overhanging tree, for example. \n\nDebris piles up on top of the body and silt accumulates. If the body lies out of the Sun's rays, which cause much more rapid decomposition, it can remain there until a flood washes away the silt and debris. \n\nOf course, if the water is cold enough, the dead body may be held in "deep freeze" and it might never rise._New Scientist \n\n\nANSWER 2: Dead bodies undergo a series of changes, biological, chemical and physical, which eventually return the body's components to the food chain. \n\nThese changes and the speed of decomposition depend on where the body is. Decomposition in air is roughly twice as fast as it is underwater and about four times as fast as underground. \n\nA living person has almost the same density as water: when you breath in, you float, and when you breath out, you sink. \n\nThis is why dead bodies sink initially. \n\nThen the changes begin, and one of the most important is the bacterial decomposition of sugars and proteins in the tissues, mainly coliforms, Clostridium, Psedomonas and Proteus species. \n\nThese are anaerobic bacteria that normally live inside the large intestine, though they may come from an infected wound, such as gangrene. \n\nAs they feed on the decaying flesh, the bacteria excrete gases carbon dioxide and sulphur dioxide which inflate some body parts, mainly the face, abdomen and male genitals. \n\nBodies usually stay underwater for between one and two weeks, although this varies widely and some bodies never come up at all. One of the factors which affects this is the temperature of the water. \n\nContrary to common belief, there is no significant difference between the time it takes for male and female corpses to resurface. There is one notable difference though: while most corpses rise with spine uppermost, women and obese persons may rise face-up. This is caused by gas forming in breasts and large abdomens.
38950
Corpses actually have more air in them that living bodies. That is why they look so bloated and unpleasant.  \n\nThis is a natural process caused by the bacteria that are still living in the body, and breaking it down. One of the byproducts of this process is a number of waste gases.\n\nEven if a dead body is weighted down on the bottom of a lake or river, it might eventually float to the surface because of the large buoyant forces provided by these gases.
149767
You might try a web search, I had at least 10 pages of answers to the inquiry, "decomposition of a body in water". Good luck.
869665
depends on the turtle\nAs sea turtles are air breathing reptiles, they need to surface to breathe. Sea turtles can hold their breath for several hours, depending upon the level of activity. A resting/sleeping turtle can remain underwater for over 4-7 hours. Recent research has shown that some turtles can even hibernate in the sea for several months! However, a stressed turtle, for instance entangled in fishing gear, quickly uses up oxygen stored within its body and may drown within minutes through panic.
734204
usually 8-10 hrs....drink LOTS of water!
1011705
The Sperm whale can hold its breath for about an hour.   They live mostly close to the surface, but they have been known to dive as deeply as 10,500 feet to hunt the giant squid they eat, but average dives are about 4,000 feet deep.  They spout (breathe) 3-5 times per minute at rest, but the rate increases to 6-7 times per minute after a dive.   The sperm whale is the real life Moby Dick.\n\nI hope this helps.
560722
If it's your first baby, it may take as long as 6 months, but it can also take as little as 3 months. It depends on a few things, how tall you are, how long your torso is, if it's your first baby, how much you are eating, how much amniotic fluid is being produced. At first, all you will notice is bloating, then you will start to notice a little bulge. No one else will notice for a while. It really depends on the person.
270930
Not very long. In most circumstance 5-7 minutes. However, in some cases, let's say, when someone falls into a half frozen pond or something, the cold is suppose to slow down their body system enough that there have been a few cases where people have been pulled out of FREEZING water 20 minutes later and they lived. Some may have had brain damage but they lived. I hope this helps!