The Grupo Calvo fleet carries out its fishing activity whilst fostering the development and application of techniques and systems aimed at releasing non-target species under optimal conditions for survival.
When fishing for tuna other species may be caught accidentally (with a low rate of incidence), including sharks, manta rays and tortoises. These species must be released and returned to the sea in optimal conditions in order to ensure they survive.
In addition to the use of release techniques, with the aim of gaining greater control over total by-catch, data collection and incidental capture control systems are used to inform international organisations on incidental capture management.
To learn more about by-catch regulation for each RFMO:
1) Atlantic: International Commission for the Conservation of Atlantic Tunas (ICCAT): http://www.iccat.int/es/ByCatch.htm
2) Eastern Pacific: Inter-American Tropical Tuna Commission (IATTC): https://www.iattc.org/ResearchSPN.htm
3) Central and Western Pacific: Western and Central Pacific Fisheries Commission (WCPFC): https://www.bmis-bycatch.org/
4) Indian: Indian Ocean Tuna Commission (IOTC): http://www.iotc.org/science/status-of-national-plans-of-action-and-fao-guidelines