The haka is a traditional ceremonial dance of the Māori people of New Zealand, historically performed to challenge opponents, welcome guests and mark important occasions. It combines chant, movement and facial expressions, including the wide eyes and protruding tongue known as pūkana. The dance reached a worldwide audience largely through the New Zealand All Blacks rugby team, who perform it before international matches, and clips of those performances spread widely online. Today creators reuse the sound to signal strength, unity and cultural pride.