Jason Momoa and castmates from the movie "Aquaman" performed a haka chant at the movie's Los Angeles premiere. The haka is a traditional dance that comes from the Maori culture of Polynesia and New Zealand. This particular haka is called Ka Mate. It's popular with some New Zealand rugby teams. Among those joining in were New Zealand actor Temuera Morrison, who plays Aquaman's father in the film, as well as Momoa's son and daughter, Nakoa-Wolf and Lola.