The ocean contains 360 quintillions gallons of water. (And just so you know; a quintillion is a billion billions which is 6 sets of 3 zeros or18 zeros.
Gallons of water int the ocean:
1,000,000,000,000,000,000, times 360. That's a lot of water.
One cubic mile of ocean water contains:
4.5 billion tons of water
128 million tons of Sodium Chloride (table salt)
18 million tons of magnesium chloride
8 million tons of magnesium sulfate (Epsom salt)
6 million tons of calcium sulfate
4.2 million tons of potassium chloride
470,000 tons of calcium carbonate
47,000 tons of rubidium
1,400 tons of nitrogen
470 tons of zinc
380 tons of phosphorous
380 tons of arsenic
94 tons of iodine
Any way that's a lot of things in one cubic mile of ocean.