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Mariana trench is deepest point in the pacific ocean which is of 10,924 m in depth.

The great barrier reef contains of 2,900 individual reefs and 900 islands stretching for about 2,000 kilometres. It covers an area of about 3,50,000 km. it is located in the Coral sea, off the coast of Queensland, Australia.

Sargasso Sea is situated in the north Atlantic Ocean where the Bermuda triangle is also present

The spring tides occur when the sun, earth and the moon come aligned in a same line and this phenomenon happens only in full and new moon days.

Heavy rains decrease the salinity in the oceans because, the rains will bring a change in the level of water in the ocean and higher the concentration of the solvent lower the concentration of the solute.

Kuroshio current produces heavy fogs around Hokkaido, which is along the coast of japan.