摘要: Publisher Summary The fishing industry probably represents the single area of human activity that has most profound effects on marine mammals. These can be categorized broadly as “operational effects” and “biological effects.” Operational include accidental capture mammals in gear, a problem brought about extinction one cetacean species recent years, threatens several other populations too. cover interactions between fisheries relate to mechanical process fishing. Several have well-documented problems with unwanted entrapment Biological encompass all consequences large-scale removal animal biomass from ecosystem through activities, including, although not limited to, possible competition for resources