Bycatch Mitigation Fact-Sheet 10. Pelagic Longline: Blue-dyed bait (squid). English, French, Japanese, Korean, Portuguese, Simplified & Traditional Chinese, Spanish.

Citation
Birdlife International (2014) Bycatch Mitigation Fact-Sheet 10. Pelagic Longline: Blue-dyed bait (squid). English, French, Japanese, Korean, Portuguese, Simplified & Traditional Chinese, Spanish.
Abstract

Blue-dyed bait is a measure under development and, while there are some promising results, there is some uncertainty about its long-term effectiveness at reducing
seabird bycatch and the practicality of widespread application. Current evidence suggests that blue-dyed squid is effective but dyed fish bait is not.