If you live anywhere along the east or west coast of Australia, chances are you might have heard it's whale watching season, when nature's biggest mammals head north in a mass migration. So in this Squiz Shortcut, we look at what a whale migration is, how whales are faring with so much concern about our oceans, and where and when you can get to see all the action. Squiz recommends: Underwater vision of the Humpback whale, narrated by the one and only Sir David Attenborough ORCCA census day information