This four page lesson covers waves, longshore currents, rip currents and upwelling. It includes images that can be enlarged in a new window that provides additional information.
http://oceanservice.noaa.gov/education/tutorial_currents/03coastal1.html
Lesson on coastal currents; page links to educational resources and animations.
http://www.onr.navy.mil/focus/ocean/motion/currents2.htm