This YouTube video from the Met Office, the UK National Weather Service, there is a nice animation and explanation of what happens in different states of the ENSO cycle, link.

You should have watched the first two minutes in the previous lesson, which explained what conditions normally look like in the Pacific Ocean. Today watch the rest of the video and see how there can be big changes that affect the entire planet. 

This game by the Center for Science Education of the University Corporation for Atmospheric Research (UCAR), from Colorado, USA, is a great way to test your knowledge on the difference between the different cycles of ENSO, link.

First read the pages of the Taste of Seawater workbook and then play the game to see if you understood what happens in the Pacific Ocean.