It takes a drop of ocean water more than 1,000 years to circulate around the world.
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A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Australia's Great Barrier Reef is 1,250 miles long!
45
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
The Atlantic Ocean is saltier than the Pacific Ocean.
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There are more than 50,000 earthquakes throughout the world every year!
47