Bubble

There are two types of bubbles - Small, and Big. Small bubbles are found in Gluglug Lagoon, and within them can be two things: Nothing, or pearls. They can be popped by using a Star Spin. Big bubbles can be found in the Sogwood Forest and on Planet Bunnera. In the Sogwood Forest, big bubbles fall from the sky by the use of a green Giant Acorn. On Planet Bunnera, however, they do not need a Giant Acorn, or anything else to trigger them - they just float around. And that's a good thing - if they don't go anywhere, then it's easier to get to where you want to be.