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A chain mat placed on Northwest Atlantic dredge gear eliminated bycatch of sea turtles: loggerhead (Caretta caretta), leatherback (Dermocheles coriacea), and green sea turtles (Chelonia mydas). The chain mat reduced catch by 6.71%.

Preliminary tests of a quick-release metal wire added to the king mackerel (Scomberomorus cavalla) troll fishery in Florida (United States) reduced depredation of catch by bottlenose dolphin (Tursiops truncatus). There was no impact on king mackerel catch.

An excluder device, tested on a trawl net in a flume tank with dummy seals in New Zealand excluded dummy seals from the codend of the net. The modifications were trialed to address bycatch of Hooker's sea lions (Phocarctos hookeri) and New Zealand fur seals (Arctocephalus forsteri).

An excluder device, tested in the United Kingdom bass (Dicentrarchus labrax), pair trawl fishery, reduced bycatch of common dolphins (Delphinus delphis). There was a negligible loss of target fish (<1%).

Underwater setting chutes, blue-dyed bait, and side-sets each reduced the bycatch of seabirds (Laysan and black-footed albatross (Phoebastria immutabilis and Phoebastria nigripes) and short-tailed shearwater (Puffinus tenuirostris) in the Hawaiian (U.S.) longline tuna and swordfish fisheries. Side-sets showed the most promise for a bycatch mitigation technique while blue-dyed bait was the least effective at reducing seabird bycatch and shows the least promise of these methods as an effective bycatch mitigation strategy.

Underwater setting chutes, blue-dyed bait, and side-sets each reduced the bycatch of seabirds (Laysan and black-footed albatross (Phoebastria immutabilis and Phoebastria nigripes) and short-tailed shearwater (Puffinus tenuirostris) in the Hawaiian (U.S.) longline tuna and swordfish fisheries. Side-sets showed the most promise for a bycatch mitigation technique while blue-dyed bait was the least effective at reducing seabird bycatch and shows the least promise of these methods as an effective bycatch mitigation strategy.

Underwater setting chutes, blue-dyed bait, and side-sets each reduced the bycatch of seabirds (Laysan and black-footed albatross (Phoebastria immutabilis and Phoebastria nigripes) and short-tailed shearwater (Puffinus tenuirostris) in the Hawaiian (U.S.) longline tuna and swordfish fisheries. Side-sets showed the most promise for a bycatch mitigation technique while blue-dyed bait was the least effective at reducing seabird bycatch and shows the least promise of these methods as an effective bycatch mitigation strategy.

Turtle excluder devices (TEDs) reduce sea turtle and non-target finfish (Atlantic croaker (Micropogonias undulateus), spot (Leiostomus exanthurus), sea catfish (Arius felis), and weakfish (Cynoscion regalis)) bycatch in the Gulf of Mexico prawn trawl fishery. Catch of targeted shrimp varied by location and TED configuration, but there was no significant difference in shrimp catch rates in 3 of the 4 TEDs when compared with a control net. One experimental TED in Texas (United States) exhibited a decrease in shrimp catch.

Acoustic pingers reduced the bycatch of the common murre (Uria aalge) in the Puget Sound (United States) salmon drift gillnet fishery, but they did not reduce bycatch of the rhinoceros auklet (Cerorhinca monocerata). Reduction of target species catch was not significant. White gillnet mesh panels in the upper portion of the net reduce the bycatch of seabirds (common murres and rhinoceros auklet) in the Puget Sound salmon drift gillnet fishery. Rhinoceros auklet bycatch was only reduced in 50-mesh visual alert nets. The white mesh panels decreased salmon catch in 50-mesh but not in 20-mesh.

Acoustic pingers reduced the bycatch of the common murre (Uria aalge) in the Puget Sound (United States) salmon drift gillnet fishery, but they did not reduce bycatch of the rhinoceros auklet (Cerorhinca monocerata). Reduction of target species catch was not significant. White gillnet mesh panels in the upper portion of the net reduce the bycatch of seabirds (common murres and rhinoceros auklet) in the Puget Sound salmon drift gillnet fishery. Rhinoceros auklet bycatch was only reduced in 50-mesh visual alert nets. The white mesh panels decreased salmon catch in 50-mesh but not in 20-mesh.