Willow, Whyla and Wes need to find out why kangaroos have pouches. Along the way, their quokka pals Quinton, Quidget and Quest learn they have something in common with kangaroos: they're all marsupials.

Willow, Whyla and Wes face their snappiest question yet as they try to find out why crocodiles like sitting in the sun. With the help of Quinton, Quidget and Quest, the gang are soon uncovering unbelievable reptile facts.

As Willow trains for her first fun run, the gang search for facts about Australia's biggest flightless bird: the emu.

The gang need to discover why the sea is salty, but first they have to find out where all the water in the sea comes from; Wes works on a plan to add fun to his favourite slushy juices.

The quokkas' snacks have gone missing, leaving Quinton, Quidget and Quest feeling hungry. The gang use their fact-finding skills to help their quokka friends, and learn why koalas are so sleepy.

Quest's first-ever tooth falls out while she's eating a leaf snack and now she can't find it. Willow, Wes and Whyla try to find Quest's lost tooth while learning whether shark teeth fall out too.