About John Hannen

John Hannen has worked in online marketing for a number of years, covering a variety of industries.

Exploring the World’s Oceans 

Underwater Fish

According to estimates made by NOAA’s National Geophysical Data Center, the world’s oceans consists of 321,003,271 cubic miles of water. It has also been acknowledged that they cover 71 per cent of Earth. So, what can actually be found within … Continue reading