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Location	Gear	Catch	Technique	Bycatch species	Type	Results
Washington State		Trout	Acoustic deterrent devices	Pinnipeds	Field study in the wild	Summary: Predator sounds (killer whales) did not deter sea lion predation on a steelhead trout fishery in Washington. Effect on Bycatch: Did not deter predation Reference: Scordino, J. and Pfeifer, R., 1993 , Sea lion/steelhead conflict at the Ballad Locks, Seattle. National Marine Fisheries Service and Washington Department of Wildlife, Seattle, Washington.
California		Sablefish	Acoustic deterrent devices	Large Cetaceans (maximum length > 7.5 meters)	Field study in the wild	Summary: Predator sounds (killer whales, Orcinus orca) caused gray whales (Eschrichtius robustus) to leave an area off the California coast. Effect on Bycatch: Whales left area Reference: Cummings, W.C. and Thompson, P.O., 1971 , Gray whales, Eschrichtius robustus, avoid the underwater sounds of killer whales, Orcinus orca.
Alaska	Hooks-and-Lines	Sablefish	Acoustic deterrent devices	Large Cetaceans (maximum length > 7.5 meters)	Field study in the wild	Summary: Pyrotechnics did not deter killer whale (Orcinus orca) depredation from longlines in Alaska over time. Effect on Bycatch: Did not deter killer whales Reference: Matkin, C., 1994 , The Killer Whales of Prince William Sound. Prince William Sound Books, Valdez, AK.
Washington State		Trout	Acoustic deterrent devices	Pinnipeds	Field study in the wild	Summary: Pyrotechnic seal bombs do not deter sea lions from locks in Washington, over time. Effect on Bycatch: Did not deter sea lions Reference: National Marine Fisheries Service and Washington Department of Fish and Wildlife., 1995 , Environmental assessment on protecting winter-run wild steelhead from predation by California sea lions in the Lake Washington Ship Canal. NMFS/WDFW Environmental Assessment Report, Seattle, Washington.
Australia	Gillnets	Trout	Passive acoustic deterrents	Small Cetaceans (maximum length < 7.5 meters)	Field study in the wild	Summary: Passive acoustic deterrents in the form of chains of metallic beads and air-filled plastic tubing attached to gillnets in Australia did not reduce bycatch of two small cetaceans: the Atlantic bottlenose dolphin (Tursiops truncatus) and Spinner dolphin (Stenella longiristris). A sub-surface set gillnet (set 4.5 m below the surface) in Australia reduced cetacean catch rate [Atlantic bottlenose dolphin (Tursiops truncatus) and Spinner dolphin (Stenella longiristris)] when compared to a standard surface set net. The sub-surface net decreased total fish (teleost species: tuna, mackerel, billfish) and shark catch approximately 25%. Effect on Bycatch: Did not reduce bycatch Reference: Hembree, D. and Harwood, M.B., 1987 , Pelagic gillnet modification trials in northern Australian seas
Australia	Gillnets	Multiple species	Sub-surface sets (gillnets)	Small Cetaceans (maximum length < 7.5 meters)	Field study in the wild	Summary: Passive acoustic deterrents in the form of chains of metallic beads and air-filled plastic tubing attached to gillnets in Australia did not reduce bycatch of two small cetaceans: the Atlantic bottlenose dolphin (Tursiops truncatus) and Spinner dolphin (Stenella longiristris). A sub-surface set gillnet (set 4.5 m below the surface) in Australia reduced cetacean catch rate [Atlantic bottlenose dolphin (Tursiops truncatus) and Spinner dolphin (Stenella longiristris)] when compared to a standard surface set net. The sub-surface net decreased total fish (teleost species: tuna, mackerel, billfish) and shark catch approximately 25%. Effect on Bycatch: Reduced bycatch Reference: Hembree, D. and Harwood, M.B., 1987 , Pelagic gillnet modification trials in northern Australian seas
Alaska	Hooks-and-Lines	Sablefish	Acoustic deterrent devices	Large Cetaceans (maximum length > 7.5 meters)	Field study in the wild	Summary: Pyrotechnic cracker shells did not deter killer whales (Orcinus orca) from longlines in the Alaskan sablefish (Anoplopoma fimbria) fishery. Effect on Bycatch: Did not deter killer whales Reference: Dahlheim, M.E., 1988 , Killer whale (Orcinus orca) depredation on longline catches of sablefish (Anoplopoma fimbria) in Alaskan waters
Canada	Non-specific	n/a	Acoustic deterrent devices	Small Cetaceans (maximum length < 7.5 meters), Phocoena phocoena (Harbor porpoise)	Field study in the wild	Summary: Acoustic Harassment Devices (AHDs) were shown to exclude harbor porpoise (Phocoena phocoena) from bays in British Columbia. Effect on Bycatch: No porpoises were sighted within 200 m of AHD Reference: Olesiuk, P., L.M. Nichol, M.J. Snowden, and J.K.B. Ford., 2002 , Effect of the sound generated by an acoustic harassment device on the relative abundance and distribution of harbor porpoises (Phocoena phocoena) in Retreat Passage, British Columbia
Alaska		Salmon	Acoustic deterrent devices	Large Cetaceans (maximum length > 7.5 meters)	Field study in the wild	Summary: For two weeks, transmission of predator sounds (killer whales) excluded beluga whales (Delphinapterus leucas) from preying on salmon smolts in Alaska's Kvichak River. Effect on Bycatch: Excluded whales Reference: Fish, J.F. and Vania, J.S., 1971 , Killer whale, Orcinus orca, sound repel white whales, Delphinapterus leucas
California	Gillnets	Swordfish & Shark	Acoustic deterrent devices	Pinnipeds	Field study in the wild	Summary: Pingers reduce bycatch of California sea lions (Zalophus californianus) and short-beaked common dolphins (Delphinus delphis) in the California drift gillnet fishery for swordfish and sharks. Catch of target fish species (broadbill swordfish, common thresher shark, and shortfin mako shark) and non-target species were not affected by pinger use. Effect on Bycatch: Reduced bycatch Reference: Barlow, J. and Cameron, G.A., 2003 , Field Experiments Show That Acoustic Pingers Reduce Marine Mammal Bycatch in the California Drift Gill Net Fishery

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