http://www.phys.unsw.edu.au/~jw/coriolis.html

And why do the large scale winds and ocean currents move clockwise in
the Northern hemisphere and anticlockwise in the Southern hemisphere?
This is a simple, non-mathematical explanation. There are links to
related material below.

ummmmmmm
the same reason that wind waves are rarely perpendicular to the wind
direction

In article , Mic
wrote:

http://www.phys.unsw.edu.au/~jw/coriolis.html