what are three areas in the ocean where salinity may be less than average?
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Salinity should be higher at the Poles than other places (this is what makes the thermohaline conveyor belt work).  Places of low salinity (at least on the surface) would include the Indian Ocean (where there is a lot of runoff from the Himalayas), the Northern part of Africa (near the mouth of the Amazon River), and the Western part of the Pacific Ocean (where it is always raining).
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Oceans: Indian, Arctic, Pacific, Atlantic, and few lakes and seas (Dead Sea)
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near the equator in the an ocean ussualy
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There are many links here, including a link to Scripps Oceanographic institue and a section with links, Marine Education (way down at the "m"s-an alphabetical list).\nhttp://www.csulb.edu/library/subj/ocean.html
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Water in the sea can vary in salt concentration, temperature and in ion ratios. The first two create differences in the density of the water and therefore warm / less salty (light) water floats on cold/ salty (heavy) water.\n\nSince these currents do not mix easily, different ratio's of ions in seawater can maintain their difference. These differences are created by sources of ions (vulcanic activity which can create specific ions, incoming rivers) or by the fact that certain ion concentrations (HCO3-, HSOx-) are very temperature dependent. \n\nusefull info can be found on http://www.biosbcc.net/ocean/marinesci/02ocean/swcomposition.htm
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Hawaii has less pollution, better sea currents & tropical waters are generally clearer/bluer than temperate waters. There are parts of the world with nicer waters than Hawaii but in relation to California, that is how I'd best put it.
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ok \n1. Pacific\n2. Antartic Cirlce\n3 Newfoundland (i'm canadian)
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Are you thinking of the Sargasso Sea?\n\nhttp://en.wikipedia.org/wiki/Sargasso_Sea
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the ocean is like the wind it has layers of different kinds of salinity of water and tempratures.it has currents going one way and the deeper you go they go an other way some are slow while others can move at highway speeds.it is what keeps the oceans stired up .hot water on the top while you have very cold dense water on the bottom,the heat of the earth is the engine of life
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The Arctic Ocean is the smallest and shallowest.
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Sea water from the world's oceans has an average salinity of approximately 3.5%. (35g/L). This salt is accumulated in the sea water from leaching and runoff from weathering rocks and soil on the continents.
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Salinity is measures as the amount of salt content in water in ppt (parts per thousand).\nThe amount of salinity depends on the source of water that feeds water into the sea. At the sea bed there is sand, rocks and sediments which contribute to the salt content in the sea. If there are many fresh water rivers opening into the sea with continuous supply the salinity will be low. Also if there is continuous supply of melting snow (this happens near the poles), content of salt will be low. \nHowever, if there is not much of fresh water flowing into the sea, the salinity will be high. Also, if the rate of evaporation is high, salinity will be high (this happens in tropical regions) because water evaporates leaving behind salts.\n\nThe Dead Sea has the highest salinity in the world. In fact the density of water is so high due to salt content that humans can actually float on the water. This is because Dead Sea is completely land-locked and has no source to supply fresh water.
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Sodium and Chlorine. Na+ and Cl- are the main ones. \n\nThe others include K+, Ca2+, Mg2+, SO42- ,H+ and  OH-\n\nThe reference gives the relative amounts of the main ions in sea water.
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the atlantic ocean is your best shot. the mediterranean isn't that good.
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a) a lower freezing point than pure water
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Oceans and seas are salt water,but the most salt water on earth could be found in the dead sea in Jordan in the Middle East.
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Swimming Pool to swim in - I prefer the chlorine water over the salt water for swimming.  The ocean to play in - jet skiis!  My ocean is the GULF of MEXICO.