Australia's Great Barrier Reef is 1,250 miles long!
45
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The Atlantic Ocean is saltier than the Pacific Ocean.
54
Every year, Alaska has about 5,000 earthquakes.
31
Israel's Dead Sea is 1,312 feet below sea level.
48
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The state with the longest coastline in the Continental U.S. is Michigan.
31
One cubic mile of seawater contains about 50 pounds of gold.
79