Cetacean by-catch is the incidental capture of non-target cetacean species in fisheries resulting in serious injury or mortality. Accidental by-catch and entanglement present a serious threat to the welfare of individual cetaceans and species conservation worldwide, as well as other marine wildlife. It can occur in a variety of fishing gear, both active and passive i.e. lost or abandoned (ghost nets).
Further research and effort into mitigating the incidences of bycatch and entanglement is needed. To firstly understand the causal factors, and secondly to begin to put measures in place to reduce these occurrences through cooperation with the fishing industry.