The four tropical-tuna RFMOs — the Inter-American Tropical Tuna Commission (IATTC), International Commission for the Conservation of Atlantic Tunas (ICCAT), Indian Ocean Tuna Commission (IOTC), and Western and Central Pacific Fisheries Commission (WCPFC) — prohibit purse seiners, and other vessels under certain conditions, from transshipping at sea. But at-sea transshipment overall has increased in recent years.
This infographic, which shows trends in the RFMOs’ reported transshipments from 2014-2021, appears in our Web feature, “At-Sea Transshipments in Tuna Fisheries: Why Oversight Is Essential for Sustainability.” It was updated in December 2023.
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