On the global grid, the prime meridian is at

The Prime Meridian is a line running between the two Earth's Poles that divides the Earth into two Hemispheres: the Eastern to the right of it (as seen when the North is up) and Western to the left. It runs through the Uk and Greenwich observatory, France, Spain and West Africa.

It's also at 0 Degrees Longitude, (so 0 degrees East or West)

Water flows along the east coast and across the western tropical pacific towards south america, while they both are directed towards that way,  el niño does not directly affect the southern flow of water along the coast. 

Answerhighlands and forests;