Lets see if I can remember this....they listed these for the seven natural wonders of the world.

Victoria Falls
Mount Everest
Bay in Rio de Janairo
Northern Lights
Great Barrier Reef Australia
Grand Canyon
Paricutin Volcano

Ok, I don't know why these get voted in or how, but there are many Natural Wonders and beauty is in the eye of the beholder.
I was in the Great Barrier Reef in Australia, and island called STRADBROKE ISLAND, NOT DIVING THERE. Missed Grand Canyon but made it by Sedona. Saw many volcanos but not Paricutin, Missed Everest but saw McKinley. Acapulco Bay is my favorite bay I don't care what gets voted in there. And where is Niagra Falls? That was WONDERful to me.