It's estimated the worlds oceans contain ten billion tons of gold, Does anyone know where it is?

Answer 1

at the bottom

Answer 2

Perhaps the ten billion in gold is from all the ships that have sunk in earlier centuries when sailing and discovery were the way of life.

Answer 3

Seawater contains gold in solution. The English chemist, S. Sonstadt, was the first to definitely establish its presence in 1872. Even today, though, precise measurements of its concentration are highly controversial. Owing to gold's extreme dilution, many factors confound its experimental measurement, such as the necessity for ultra pure reagents, gold's affinity for and absorption into the walls of the experimental glassware, and gold's tendency to precipitate out of solution during transportation or preservation (Burk 1989). Though some of the earlier investigations, prior to 1960, have yielded wildly varied values, as high as 4000 ppt (parts per trillion) (Putman 1953), subsequent efforts have been more consistent. When considering only the data gathered since 1980, reported values for the concentration of gold in seawater have ranged from 5 to 50 ppt (Lucas 1985), with the average concentration at about 13 ppt. Some of the highest concentrations recently reported have come from seawater samples taken from the Bering Sea at 50 ppt (Pashkova 1988).

Perhaps the higher concentrations of gold found in the Bering Sea can be attributed to the gold rich rivers of Alaska and Siberia that flow into the Bering Sea. Though the oceans of the Earth are mostly homogenous in the concentrations of dissolved minerals and trace elements, it is reasonable to believe that the effluence of gold-rich rivers may be at least partly responsible for the variability of concentrations. The gold concentration of some rivers has been measured in the low 1000's of ppt, and gold's actual solubility limit is about 4000 ppt at 23o C at a 1.8% concentration of chloride ions (Wood 1971). The reason why gold is found in such low concentrations relative to that of a saturated aqueous solution has to do with several natural processes, such as the action of biological scavengers which accumulate gold, the adsorption of gold on clay particles and sediments, and the adsorption of gold by high molecular weight organic matter present in seawater (Krauskopf 1956, Wood 1971, Burk 1989). This might also help explain the higher concentration of gold measured in the polar seas where the abundance of sedimentary deposits of microorganisms is less.

Seawater is not the only source of gold from the sea. As previously mentioned, the continental rivers can carry huge quantities of gold to the sea, and not all of it is dissolved or in colloidal solution. The erosive forces of wind, water, and ice can strip the continental rocks of its gold and carry it to the sea. The estuaries and ocean beaches near the mouths of these rivers can and have been commercially exploited. In the region of the Stuart Peninsula of Alaska, the Yukon, Kobuk, and Noatak Rivers pour into Norton and Kotzebue Sounds carrying their gold laden alluvial sands and gravels. By 1898, gold prospectors working the rich placer deposits of the Yukon River and its tributaries had arrived at Anvil Creek near Nome. The ocean beaches within a few miles of Nome yielded the most gold to have yet been mined from the sea. By 1904, nearly 250,000 ounces of gold had been panned and sluiced from the beaches. In October of 1904, two men working a rocker near the mouth of Little Creek recovered in seven hours more than 2,400 ounces of gold (MaClaren 1908, Brooks 1905). Gold is still being profitably mined and dredged from these beaches and more ancient beach gravels in the area of the Stuard Peninsula. Profitable gold beach placers are not limited to Alaska. For instance, the beaches near the mouth of the San Lorenzo River in Santa Cruz, California, were mined periodically during the 1930's when the Great Depression forced many out-of-work Americans into the gold fields of California. It was reported that two men working a sluice could recover an ounce of gold per day when the first miners arrived at the Santa Cruz beaches. Within a year or two the gold had been depleted sufficiently so that only after a large Winter storm, when much of the sands were stripped away revealing the richer sands closer to bedrock, were the beaches again profitable.

Answer 4

Under the water

Answer 5

in the Pacific Ocean