Benthic foraminifera have proven to be valuable tools for understanding the dynamics of methane seepage worldwide. This study characterizes the filtration levels of surface samples from 18 stations within a filtration field on the outer continental shelf of the Colombian Caribbean margin. The characterization was based on variables of benthic foraminifera (wall types, spatial distribution of abundances, associations of dominant species), shell modifications (overgrowth, dissolution, and fragmentation), multivariate statistics, and models explaining the relationships between foraminifera populations and species with levels of filtration activity. Four activity zones were identified. The assemblage of Q. candeiana, T. trigonula, L. difflugiformis, C. poeyanum, and Criboelphidium sp, represents low activity; the assemblage of L. ungeriana, C. mundulus, and C. pseudoungerianus represents moderate filtration; the assemblage of L. soldanii, B. irregularis, and R. agglutinatus represents....