This study examines the non-linear cointegrated relationship between capture production and the El Nino/La Nina index using the quantile technique proposed by Xiao (2009). According to the annual sample data of 6 Major Fishing Areas in the Pacific Ocean from 1950 to 2008, our empirical findings provide strong evidence that the cointegrating coefficients follow a time-varying process. They also imply that most of these long-run relationships are influenced by potential shocks over time rather than from maintaining a constant effect consistently. Overall, the contributions of this study not only stresses the importance of the quantile property in cointegrated models, but also provides a viewpoint on the long-run approach that the overall El Nino and La Nina act as engines for capture production.