Kapu Ku ialua

Unique as a martial arts for its focus on bone breaking, Kapu Ku ialua is an ancient martial art from Hawaii. Also employing pressure point manipulation, joint locks, and even open ocean warfare, Kapu Ku ialua was only taught to professional warriors, guards, and royal family members (except in times of war). Common weapons show a reliance on what was around, including canoe oars and the leiomano: a shark tooth lined instrument used for clubbing or striking opponents.