The higher the saline content in water the heavier the water. This causes it to sink towards the bottom and water with lower levels will rise to the top. It will remain so unless stirred vigoriouly and often. Many animals live, and thrive in this setting, such as salt marshes, springs, also some ponds and lakes.
When ocean water freezes into sea ice, some of the salt is incorporated into the new ice. Thereafter, that salt drains as brine (salt plus water), causing the layer of water below to be of higher salinity.
No, increasing salinity results in higher density. This density increase means you will also be able to float more easily in more saline water. The higher the salinity the lower the temperature it will freeze.
Seawater's density varies by temperature and salinity. I.e., cold water is more dense than warm water, and water with a higher salinity (more dissolved salt) is less dense than water with a lower salinity.
River water has a higher salinity, which means there is a lot of salt in the water. In the sea, however, the salt sinks to the bottom of the ocean, so the sea water has a lower salinity.
the higher the salinity the more easily an object can float
Water salinity describes the amount of salty minerals dissolved in a sample of water. It would therefore make no difference whether the water is warm or cold, since you would have the same amount of salt dissolved in the water per cm3 of water. Salinity would change if you added more water, or if the water was so hot that some of it evaporates, leaving all the dissolved solids behind, but decreasing the amount of water it is dissolved in.
yes it does
The warmer a solution becomes, the higher the salinity can be. Warmer water can have more of a salt dissolved in it.
Hypersaline refers to a body of water that has about 40 parts per mil salinity which is much higher than the salinity for average ocean water which is about 35 parts per mil salinity.
Salinity is affected by temperature of the water, amount of salt per area, how cool it is, and the amount of water per area. If it's hot, the water will evaporate leaving more salt behind. The more salt you add, of course you will have a higher salinity. If it is cold, ice forms and pushes out the salt into the water below. And if you add more water, there will be more water to hold the salt, thus lowering the salinity.
What happens is, the high salinity water (hyper tonic solution), mixes with the low salinity water (Hypo tonic solution), and eventually the sodium and chloride ions will slowly move into the lower salt water, and create a uniformly salty water.
The lowest areas of salinity in an ocean are near where fresh water rivers empty into them. This is because the influx of fresh water creates an area of lower salinity compared to the remainder of the ocean.