The Yellow Wollywog (or Yellow Wollyhop) is probably the first thing that comes to mind when one hears the term 'amphituber' or 'wollywog.' These frog-like creatures can usually be found in or around large, open-air bodies of water. They are known to leap into the air with the intent of landing on and crushing small Pikmin below, and behavior which is most readily explained as an attempt to drive predators away from developing eggs.