Wharves are raw resource buildings in Tropico 5. Their main use is providing Tropico with fish which can be used for local consumption, sold off as exports immediately, or sent to a cannery to be canned and sold off at a higher price. If a Oil Spill occurs, nearby Wharves will become unusable until the spill is cleaned up. Fish population can be: none, scarce, moderate or abundant with a difference in production for each one.