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Predator sounds (killer whales) did not deter sea lion (Zalophus californianus) predation on a steelhead trout (Oncorhynchus mykiss) fishery in Washington.

Predator sounds (killer whales, Orcinus orca) caused gray whales (Eschrichtius robustus) to leave an area off the California (U.S.) coast.

Pyrotechnics did not deter killer whale (Orcinus orca) depredation from longlines in Alaska (United States) over time.

Pyrotechnic seal bombs do not deter sea lions (Zalophus californianus) from locks in Washington (United States) over time.

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%.

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%.

Pyrotechnic cracker shells did not deter killer whales (Orcinus orca) from longlines in the Alaskan (U.S.) sablefish (Anoplopoma fimbria) fishery.

Acoustic Harassment Devices (AHDs) were shown to exclude harbor porpoise (Phocoena phocoena) from bays in British Columbia, Canada. 

For two weeks, transmission of predator sounds (killer whales, Orcinus orca) excluded beluga whales (Delphinapterus leucas) from preying on salmon (Oncorhynchus nerka) smolts in Alaska's Kvichak River (United States).

Pingers reduce bycatch of California sea lions (Zalophus californianus) and short-beaked common dolphins (Delphinus delphis) in the California (U.S.) drift gillnet fishery for swordfish and sharks. Catch of target fish species (broadbill swordfish (Xiphias gladius), common thresher shark (Alopias vulpinus), and shortfin mako shark (Isurus oxyrinchus)) and non-target species were not affected by pinger use.