It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The Caspian Sea is also classed as the world's largest lake.
52
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The Atlantic Ocean is saltier than the Pacific Ocean.
54
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The average ice berg weighs 20,000,000 tons!
54
Europe is the only continent without a desert.
62
One cubic mile of seawater contains about 50 pounds of gold.
79