Several Threatened, Endangered and Protected species (TEPs) are vulnerable to entanglement and drowning in demersal shark gillnets. These include Australian Sea Lions off South Australia, and dolphins and seals off Victoria. To mitigate the effect of the fishery on Australian Sea Lion (ASL) populations, AFMA implemented the 2010 Australian Sea Lion (ASL) Management Strategy, which reduced the profitability of the fishery off South Australia, and resulted in a shift of effort to Bass Strait. More recently, AFMA implemented the 2017 Gillnet Dolphin Mitigation Strategy and industry is concerned that gillnet operators in Bass Strait could face the same issues that SA vessels faced after implementation of the ASL Management Strategy. As a result, fishers in Bass Strait are considering a transition to longlines to avoid dolphin and seal interactions. This investment will explore the economic viability of gillnet boats converting to line fishing in Bass Strait and monitor the associated bycatch of species of interest to other commercial and recreational fishing sectors.