Dehidration In the sea?

Question

Okay, I`ve heard that we could suffering the dehidration even we are swimming in the sea. Please tell me the reason.

Answer 1

Because the body cannot process salt water.

Answer 2

It's based on the tonicity of your blood. While the slat water has water, it also has a great deal of salt, much more than your body. If you know anything about osmosis, then you understand why the salt water will literally suck the freshwater right out of your body, until the fluid levels between the two gradients, your body and the sea, balance. Furthermore, is a diruetic, causing you to further lose fluids. Still, water will diffuse across your skin, even if only swimming, and you will gradually dehydrate in salt waters. I have no idea if it can be lethal, but it would not suprise me in the least.

Try this site for a more in depth explanation: http://ebtx.com/theory/osmosis.htm

Answer 3

The sea water has lower water concentration than our body because it contents very high concentration of minerals.and our body has higher water concentration.The water molecules in the cell of our body will move out from our body into the sea because the water potential in our body is higher while the water potential of the sea water is lower.Water molecules tend to move from higher water potential region to lower potential region.Therefore,osmosis will happen in the cell on our skin.The process will only stop when there is no net movement of both solution equals to zero and when the two solutions have the same water potential.Cells on our skin therefore will shrivel up

Answer 4

Because salt is a diuretic. When you are in the sea you have the same salinity of seawater so it will have the tendency to cause your kidneys to work harder and eliminate it from the body. The more water you absorb, the more salt you absorb, which accelerates the process.

Answer 5

dehydration is loss of fluid , namely water from the body. Swimming in the sea does not constitute drinking water or taking in fluid. If you don't take in fluid, and loss the little you have through excretions, you get dehydrated.

Answer 6

Drinking salt water puts more solutes in your body than is healthy for your body. It ruins your body chemistry. It is not that there is not enough water, it is because there is too much salt.

Answer 7

Dehydration refers to the fluid levels inside you, not outside you.

And drinking salty water doesn't help presumably because you then need even more fresh water to balance your ion levels. Or something.