The Atlantic Ocean is saltier than the Pacific Ocean.
54
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The water of the Antarctica is so cold that nothing can rot there.
334
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The Amazon rainforest produces more than 20% the world's oxygen supply.
182