Abstract
The intensity of fish predation was measured by comparing loss of gastropod shells at four intertidal shores on the Pacific Coast of Costa Rica. Fish had little effect on shell losses of gastropods although some shell crushing occurred. Fish predation intensity in central Costa Rica was variable in space and time and was lower than in the Bay of Panama. Rate of loss of gastropods in Costa Rica was as low as that documented for temperate regions, suggesting that variation among latitudes (temperate vs. tropical) is no higher than variation at similar latitudes (Panama vs. Costa Rica). Local variation within each region should be considered when temperate-tropical comparisons are made.
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