Incredible But True Incredible But True Human World History Makers Cities Of The World Art And Music Sporting Headlines Plant Life Fish, Amphibians, Reptiles Birds and Mammals Creepy Crawlies Marine Life Restless Earth Earth's Secrets Changing Weather Seas And Oceans Comparisons Amazing Structures Machines And Man World Of Inventions Travelling Around Mysterious Universe	Water Content The number of molecules in 1 cubic centimetre of water equals twice the number of cubic inches of water in the Mediterranean Sea. Water molecules   Previous: Back Book: Incredible But True Section: Incredible But True Chapter: Comparisons