How do you get the olive oceans map in Kirby amazing mirror?

To unlock the Olive Ocean map in "Kirby & the Amazing Mirror," you need to progress through the game until you reach the area known as the "Crispy Galaxy." Once you've defeated the boss there, you'll gain access to the portal leading to Olive Ocean. Be sure to explore and defeat the necessary enemies to obtain the key items required to navigate and unlock the map successfully.