Two Polymeric resins (XAD-2 and XAD-4) were tested for their efficacy in removing total organic carbon (TOC) from marine mammal pool water. At 588 mg XAD-2/1, TOC was reduced by approximately 10% after 4 days; 630 mg XAD-4/1 reduced TOC concentrations by approximately 12% in the same time period. Correlation coefficients were 0.96 and 0.965 for XAD-2 and XAD-4, respectively. Equilibrium was not approached in any of the experiments even after 4 days. The materials are ineffective in this application, although other ion exchange resins may perform better.