Desc: GMac Big Wave Attack: North Canyon: Directed by Paulo Caldeira, Polvo Concepts, Garrett McNamara, Gustavo Neves. With Garrett McNamara. Big wave master Garrett McNamara has taken the surf world by storm, conquering a World Record wave off the coast of Portugal. Now join him in Nazare, Portugal, where it all began. This is the account of Garrett discovering a remarkable underwater canyon that causes some of the world's most giant waves.