In these reports, we share our research-based recommendations for sustainable tuna fisheries management, covering observer programs, transshipment, and many other key topics.

Best practices reports are authored by our fisheries policy experts and/or fisheries scientists. See also our companion “best practices snapshots” series and our scientific reports.

Best Practices Reports tagged with Bycatch

Image Title Date Author(s) Language RFMO(s) Tag(s) Category Company Report Type Activity Year
Image Title Date Author(s) Language RFMO(s) Tag(s) Category Company Report Type Activity Year
2020 ICCAT Declaración de Posición | 2020 ICCAT Position Statement (Spanish) October 28, 2020 Spanish ICCAT Bycatch, Compliance, FADs, Harvest Strategies, ICCAT, MCS, Sharks, Tuna Position Statements, Translated N/A Final October 28, 2020
2020 ICCAT Déclaration de Position | 2020 ICCAT Position Statement (French) October 28, 2020 French ICCAT Bycatch, Compliance, FADs, Harvest Strategies, ICCAT, MCS, Sharks, Tuna Position Statements, Translated N/A Final October 28, 2020
2020 ICCAT Position Statement (English) October 28, 2020 English ICCAT Bycatch, Compliance, FADs, Harvest Strategies, ICCAT, MCS, Sharks, Tuna Position Statements N/A Final October 28, 2020
2021 CIAT Declaración de Posición | 2021 IATTC Position Statement (Spanish) July 15, 2021 Spanish IATTC Bycatch, FADs, Harvest Strategies, IATTC, MCS, Sharks, Tuna Position Statements, Translated N/A Final July 15, 2021
2021 IATTC Position Statement July 1, 2021 English IATTC Bycatch, FADs, Harvest Strategies, IATTC, MCS, Sharks, Tuna Position Statements N/A Final July 1, 2021
2021 ICCAT Position Statement (English) October 15, 2021 English ICCAT Bycatch, Compliance, FADs, Harvest Strategies, ICCAT, MCS, Sharks, Tuna Position Statements N/A Final October 15, 2021
2021 ICCAT Position Statement (French) October 20, 2021 French ICCAT Bycatch, Compliance, FADs, Harvest Strategies, ICCAT, MCS, Sharks, Tuna Position Statements, Translated N/A Final October 20, 2021
2021 ICCAT Position Statement (Spanish) October 20, 2021 Spanish ICCAT Bycatch, Compliance, FADs, Harvest Strategies, ICCAT, MCS, Sharks, Tuna Position Statements, Translated N/A Final October 20, 2021
2021 IOTC Déclaration de Position (French) (for June 2021 Meeting) April 29, 2021 French IOTC Bycatch, Compliance, Electronic Monitoring & Reporting, FADs, Harvest Strategies, IOTC, MCS, Observer Coverage, Port State Measures, Sharks, Supply Vessel, Transshipment, Tuna, Vessel Monitoring System Position Statements, Translated N/A Final April 29, 2021
2021 IOTC Position Statement (for June 2021 Meeting) April 26, 2021 English IOTC Bycatch, Compliance, Electronic Monitoring & Reporting, FADs, Harvest Strategies, IOTC, MCS, Observer Coverage, Port State Measures, Sharks, Supply Vessel, Transshipment, Tuna, Vessel Monitoring System Position Statements N/A Final April 26, 2021
2022 CIAT Declaración de Posición | 2022 IATTC Position Statement (Spanish) June 30, 2022 Spanish IATTC Bycatch, Capacity Management, Compliance, FADs, Harvest Strategies, IATTC, MCS, Sharks, Tuna Position Statements, Translated N/A Final June 30, 2022
2022 IATTC Position Statement June 30, 2022 English IATTC Bycatch, Capacity Management, Compliance, FADs, Harvest Strategies, IATTC, MCS, Sharks, Tuna Position Statements N/A Final June 30, 2022
2022 IOTC Déclaration de Position (French) April 8, 2022 French IOTC Bycatch, Bycatch Mitigation, Compliance, Electronic Monitoring & Reporting, FADs, Harvest Strategies, IOTC, Observer Coverage, Sharks, Supply Vessel, Transshipment, Tuna Position Statements, Translated N/A Final April 8, 2022
2022 IOTC Position Statement April 8, 2022 English IOTC Bycatch, Bycatch Mitigation, Compliance, Electronic Monitoring & Reporting, FADs, Harvest Strategies, IOTC, Observer Coverage, Sharks, Supply Vessel, Transshipment, Tuna Position Statements N/A Final April 8, 2022
ISSF
A Preliminary Evaluation of the Environmental Impact of Fishing for Global Tuna Fisheries Relative to Marine Stewardship Council Criteria February 3, 2017 ISSF English N/A Bycatch, MSC Certification Scientific Reports N/A Technical Report February 3, 2017
Bycatch Rates by Ocean and Set Type May 22, 2019 English N/A Bycatch, Bycatch Mitigation, Purse Seine, Tuna Infographics N/A Final May 22, 2019
Conservation Measures by Category June 27, 2022 English N/A Bycatch, Conservation Measures, Sticky, Tuna Conservation Measures, Infographics N/A Final June 27, 2022
Electronic Monitoring Vendors and Data Submission Information March 11, 2020 ISSF English N/A Bycatch, Conservation Measures, Electronic Monitoring & Reporting, FADs, RFMOs Conservation Measures N/A Guide March 11, 2020
Improving Silky Shark Survival February 6, 2017 English N/A Bycatch, Bycatch Mitigation, FADs, Purse Seine, Sharks Bycatch, Infographics N/A N/A February 6, 2017
ISSF #BycatchProject Overview January 11, 2015 English N/A Bycatch, Bycatch Mitigation, science Bycatch N/A N/A January 11, 2015
ISSF 2009-02: Bycatch in the World’s Tuna Fisheries: Measured Data, Programs and Progress Proposal. Jun 2009 June 1, 2009 ISSF English N/A Bycatch, Bycatch Mitigation Scientific Reports, Technical Reports N/A Technical Report June 1, 2009
ISSF 2009-03: Mitigation of Bycatches in Tuna Purse Seiners. Sukarrieta Meeting, Nov 2009 November 27, 2009 ISSF English N/A Bycatch Meeting Reports, Scientific Reports, Technical Reports N/A Meeting Report November 27, 2009
ISSF 2011-02: Report of the 2011 ISSF Stock Assessment Workshop. Stock-Recruitment Relationships and Juvenile and Small Tuna Mortality. March 17, 2011 ISSF English N/A Bycatch Meeting Reports, Scientific Reports, Technical Reports N/A Workshop Report March 17, 2011
ISSF 2012-05: Bycatch in the Indian Ocean Gillnet Tuna Fleet. A review May 8, 2012 MRAG Americas English N/A Bycatch, Gillnet Scientific Reports, Technical Reports N/A Technical Report May 8, 2012
ISSF 2012-12: Harmonisation of Purse-Seine Data Collected by Tuna RFMO Observer Programmes October 19, 2012 ISSF English N/A Bycatch, Observer Programs, RFMOs, Stock Status Scientific Reports, Technical Reports N/A Technical Report October 19, 2012
ISSF 2014-03: Report of the ISSF Workshop on FADs as Ecological Traps March 13, 2014 ISSF English N/A Bycatch, FADs, Tuna Scientific Reports, Technical Reports N/A Workshop Report March 13, 2014
ISSF 2014-12: Exploration of Market Viability for the Full Retention of Non-Tuna Species in Purse Seine Fisheries December 9, 2014 A. O. Lewis English N/A Bycatch, Purse Seine, Tuna Bycatch, Scientific Reports, Technical Reports N/A Technical Report December 9, 2014
ISSF 2015-02: Preliminary Study of the Relative Fishery Impacts on Non-Tuna Species Caught in Tuna Fisheries February 16, 2015 Ana Justel-Rubio, Dr. Victor Restrepo English N/A Bycatch, Tuna Scientific Reports, Technical Reports N/A Technical Report February 16, 2015
ISSF 2015-08: Harmonization of Longline Bycatch Data in Tuna RFMOs February 26, 2015 ISSF English N/A Bycatch, Longline, RFMOs, Tuna Scientific Reports, Technical Reports N/A Technical Report February 26, 2015
ISSF 2015-10: Global Comparison of Post Release Survival of Silky Sharks Caught by Tropical Tuna Purse Seiners July 22, 2015 J. Filmalter, Dr. Melanie Hutchinson, F. Poisson, W. Eddy, R. Brill, D. Bernal, David Itano, Jeff Muir, A.-L. Vernet, K. Holland, Dr. Laurent Dagorn English N/A Bycatch, Bycatch Mitigation, Sharks Scientific Reports, Technical Reports N/A Technical Report July 22, 2015
ISSF 2016-08: Advances in the Use of Entanglement-Reducing Drifting Fish Aggregating Devices in Tuna Purse Seiners April 28, 2016 Dr. Jefferson Murua, David Itano, Martin Hall, Dr. Laurent Dagorn, Dr. Gala Moreno, Dr. Victor Restrepo English N/A Bycatch, Bycatch Mitigation, FADs, Purse Seine, science Scientific Reports, Technical Reports N/A Technical Report April 28, 2016
ISSF 2016-09: Training of Costa Rican Longline Fishermen, Observers and Government Agencies on Sea Turtles Survival June 20, 2016 Sandra Andraka, Mariluz Parga English N/A Bycatch, Longline, Sea Turtles Bycatch, Scientific Reports, Technical Reports N/A Technical Report June 20, 2016
ISSF 2016-16: Implementation of Pilot Projects to Explore the Market Viability of Full-Retention of Non-Tuna Species in Purse Seine Fisheries November 15, 2016 A. O. Lewis English N/A Bycatch, Bycatch Mitigation, Purse Seine Bycatch, Scientific Reports N/A Technical Report November 15, 2016
ISSF 2017-01: Computing a Global Rate of Non-Target Species Catch (Bycatch) in Tropical Tuna Purse Seine Fisheries* February 7, 2017 Ana Justel-Rubio, Dr. Victor Restrepo English N/A Bycatch, Purse Seine, science, Tuna Bycatch, Scientific Reports, Technical Reports N/A Technical Report February 7, 2017
ISSF 2017-06: A Summary of Bycatch Issues and ISSF Mitigation Activities To Date in Purse-Seine Fisheries, with Emphasis on FADs* November 27, 2017 Dr. Victor Restrepo, Dr. Laurent Dagorn, David Itano, Ana Justel-Rubio, Dr. Gala Moreno English N/A Bycatch, Bycatch Mitigation, FADs, Justel-Rubio, Purse Seine, science Scientific Reports, Technical Reports N/A Technical Report November 27, 2017
ISSF 2018-06: Characterizing Small and Medium Scale Tuna Purse Seine and Ring Net Vessels in Indonesia March 28, 2018 Dr. Jefferson Murua, David Itano, Anung Widodo English N/A Bycatch, FADs, Purse Seine, Tuna Scientific Reports, Technical Reports N/A Technical Report March 28, 2018
ISSF 2018-20: Compendium of at-Sea Bycatch Mitigation Research Activities as of September 2018* October 2, 2018 Dr. Victor Restrepo, Dr. Laurent Dagorn, Dr. Gala Moreno, K. Schaefer, Fabien Forget, Igor Sancristobal, David Itano, Dr. Melanie Hutchinson English N/A Acoustic Discrimination, Bigeye Tuna, Biodegradable FADs, Bycatch, Bycatch Mitigation, Purse Seine, Rays, science, Sea Turtles, Sharks Scientific Reports, Technical Reports N/A Technical Report October 2, 2018
ISSF 2019 Position Statements February 15, 2021 English, French, Spanish IATTC, ICCAT, IOTC, WCPFC Bycatch, Capacity Management, Compliance, FADs, Harvest Strategies, IATTC, ICCAT, IOTC, MCS, RFMOs, Sharks, Supply Vessel, Tuna, WCPFC Position Statements N/A Final February 15, 2021
ISSF 2019-08: Report of the International Workshop on Mitigating Environmental Impacts of Tropical Tuna Purse Seine Fisheries April 24, 2019 Dr. Victor Restrepo, Dr. Laurent Dagorn, Dr. Gala Moreno, Dr. Jefferson Murua, Fabien Forget, Ana Justel-Rubio English N/A Bigeye Tuna, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Purse Seine, Rays, science, Sharks, Tuna, Yellowfin Tuna Meeting Reports, Scientific Reports N/A Workshop Report April 24, 2019
ISSF 2020-01: ISSF Skippers Workshops Round 9* January 9, 2020 Dr. Jefferson Murua, Dr. Gala Moreno, David Itano, Martin Hall, Dr. Laurent Dagorn, Dr. Victor Restrepo English N/A Bycatch, Bycatch Mitigation, FADs, Purse Seine, Skippers Workshops Scientific Reports, Technical Reports N/A Technical Report January 9, 2020
ISSF 2021-11: Questions and Answers About FADs and Bycatch* June 10, 2021 Dr. Hilario Murua, Dr. Laurent Dagorn, Dr. Gala Moreno, Ana Justel-Rubio, Dr. Victor Restrepo English N/A Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Purse Seine Bycatch, Scientific Reports, Technical Reports N/A Technical Report June 10, 2021
Non-Entangling and Biodegradable FADs Guide (English) October 8, 2019 ISSF English N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs N/A Guide October 8, 2019
Non-Entangling and Biodegradable FADs Guide (French) October 8, 2019 ISSF French N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs, Translated N/A Guide October 8, 2019
Non-Entangling and Biodegradable FADs Guide (Indonesian) October 8, 2019 ISSF Indonesian N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs, Translated N/A Guide October 8, 2019
Non-Entangling and Biodegradable FADs Guide (Japanese) October 8, 2019 ISSF Japanese N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs, Translated N/A Guide October 8, 2019
Non-Entangling and Biodegradable FADs Guide (Korean) October 8, 2019 ISSF Korean N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs, Translated N/A Guide October 8, 2019
Non-Entangling and Biodegradable FADs Guide (Simplified Chinese) October 8, 2019 ISSF Simplified Chinese N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs, Translated N/A Guide October 8, 2019
Non-Entangling and Biodegradable FADs Guide (Spanish) October 10, 2019 ISSF Spanish N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs, Translated N/A Guide October 10, 2019
Non-Entangling and Biodegradable FADs Guide (Tagalog) October 8, 2019 ISSF Tagalog N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs, Translated N/A Guide October 8, 2019
Non-Entangling and Biodegradable FADs Guide (Traditional Chinese) October 8, 2019 ISSF Traditional Chinese N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs, Translated N/A Guide October 8, 2019
Non-Entangling and Biodegradable FADs Guide (Vietnamese) October 8, 2019 ISSF Vietnamese N/A Best Practices, Biodegradable FADs, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Ghost Fishing, Non-Entangling FADs, RFMOs, science, Sea Turtles, Sharks, Skippers Workshops Bycatch, Guides & Best Practices, Non-Entangling FADs, Translated N/A Guide October 8, 2019
Non-target Species Caught in Tuna Fisheries April 15, 2016 English N/A Bycatch, Bycatch Mitigation, Gillnet, Longline, Pole and Line, Purse Seine, science, Sea Turtles, Sharks, Trolling Infographics N/A N/A April 15, 2016
Presentations from International Workshop on Mitigating Environmental Impacts of Tropical Tuna Purse Seine Fisheries (2019) April 24, 2019 Dr. Gala Moreno, Dr. Jefferson Murua, Dr. Laurent Dagorn, Dr. Victor Restrepo, Ana Justel-Rubio English N/A Bigeye Tuna, Bycatch, Bycatch Mitigation, Ecosystem, FADs, Jefferson Murua, Justel-Rubio, science, Tuna, Yellowfin Tuna Meeting Reports, Scientific Reports N/A Workshop Report April 24, 2019
Protecting Sharks: Reducing Shark Bycatch in Purse Seine Fisheries September 27, 2016 English N/A Bycatch, Bycatch Mitigation, Purse Seine, Sharks Bycatch, Infographics N/A N/A September 27, 2016
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PSA tuna scores, 02-2017 February 1, 2017 English N/A Bycatch Infographics N/A N/A February 1, 2017
Saving Sea Turtles Infographic (English version) August 24, 2016 English N/A Bycatch, Bycatch Mitigation, Sea Turtles Infographics N/A N/A August 24, 2016
Saving Sea Turtles Infographic (Spanish Version) August 24, 2016 Spanish N/A Bycatch, Bycatch Mitigation, Sea Turtles Infographics, Translated N/A Final August 24, 2016
Saving the Mobula Rays Poster: Atlantic Ocean (English) January 3, 2022 English N/A Atlantic Ocean, Bycatch, Bycatch Mitigation, Mobula rays Infographics N/A Final January 3, 2022
Saving the Mobula Rays Poster: Atlantic Ocean (French) January 27, 2022 French N/A Atlantic Ocean, Bycatch, Bycatch Mitigation, Mobula rays Infographics, Translated N/A Final January 27, 2022
Saving the Mobula Rays Poster: Eastern Pacific Ocean (English) January 3, 2022 English N/A Bycatch, Bycatch Mitigation, Eastern Pacific Ocean, Mobula rays Infographics N/A Final January 3, 2022
Saving the Mobula Rays Poster: Eastern Pacific Ocean (Korean) January 3, 2022 Korean N/A Bycatch, Bycatch Mitigation, Eastern Pacific Ocean, Mobula rays Infographics, Translated N/A Final January 3, 2022
Saving the Mobula Rays Poster: Eastern Pacific Ocean (Spanish) January 3, 2022 Spanish N/A Bycatch, Bycatch Mitigation, Eastern Pacific Ocean, Mobula rays Infographics, Translated N/A Final January 3, 2022
Saving the Mobula Rays Poster: Eastern Pacific Ocean (Taiwanese) January 3, 2022 Taiwanese N/A Bycatch, Bycatch Mitigation, Eastern Pacific Ocean, Mobula rays Infographics, Translated N/A Final January 3, 2022
Saving the Mobula Rays Poster: Western & Central Pacific Ocean & Indian Ocean (Bahasa/Malay) January 27, 2022 Bahasa/Malay N/A Bycatch, Bycatch Mitigation, Indian Ocean, Mobula rays, Western & Central Pacific Ocean Infographics, Translated N/A Final January 27, 2022
Saving the Mobula Rays Poster: Western & Central Pacific Ocean & Indian Ocean (Chinese) January 27, 2022 Chinese N/A Bycatch, Bycatch Mitigation, Indian Ocean, Mobula rays, Western & Central Pacific Ocean Infographics, Translated N/A Final January 27, 2022
Saving the Mobula Rays Poster: Western & Central Pacific Ocean & Indian Ocean (English) January 3, 2022 English N/A Bycatch, Bycatch Mitigation, Indian Ocean, Mobula rays, Western & Central Pacific Ocean Infographics N/A Final January 3, 2022
Saving the Mobula Rays Poster: Western & Central Pacific Ocean & Indian Ocean (Tagalog) January 27, 2022 Tagalog N/A Bycatch, Bycatch Mitigation, Indian Ocean, Mobula rays, Western & Central Pacific Ocean Infographics, Translated N/A Final January 27, 2022
Saving the Mobula Rays Poster: Western & Central Pacific Ocean & Indian Ocean (Taiwanese) January 27, 2022 Taiwanese N/A Bycatch, Bycatch Mitigation, Indian Ocean, Mobula rays, Western & Central Pacific Ocean Infographics, Translated N/A Final January 27, 2022
Towards Acoustic Discrimination of Tuna Species at FADS September 12, 2016 English N/A Bigeye Tuna, Bycatch, Conservation Measures, FADs, Purse Seine, Skipjack, Sticky, Tuna, Yellowfin Tuna Bycatch, Conservation Measures N/A N/A September 12, 2016
Tropical Purse Seine Fisheries Bycatch: Atlantic Ocean June 19, 2019 English N/A Bycatch, FADs, Purse Seine, Sharks, Tuna Infographics N/A Final June 19, 2019
Tropical Purse Seine Fisheries Bycatch: Eastern Pacific Ocean June 19, 2019 English N/A Bycatch, FADs, Purse Seine, Sharks, Tuna Infographics N/A Final June 19, 2019
Tropical Purse Seine Fisheries Bycatch: Indian Ocean June 19, 2019 English N/A Bycatch, FADs, Purse Seine, Rays, Sharks, Tuna Infographics N/A Final June 19, 2019
Tropical Purse Seine Fisheries Bycatch: Western and Central Pacific Ocean June 19, 2019 English N/A Bycatch, FADs, Purse Seine, Rays, Sharks, Tuna Infographics N/A Final June 19, 2019