When Zeke and his Mum are cloud watching, and talking about breathing, Zeke decides he wants to thank the trees and algae for giving us oxygen. He thanks the tree with a hug, but has to think of a different way of showing gratitude to algae. Zeke’s plan is to scoop rubbish out of the sea to make it a nicer place for the algae and Mum helps Zeke and Ky make fishing nets.