Kiribati's Tuna Fortune Threatened by Warming Seas

The vast Pacific Ocean is a major source of the world's tuna, with Kiribati's islands being a significant hub. Over 70% of Kiribati's government revenue is derived from selling tuna fishing licenses to foreign fleets, a proportion unmatched by any other nation. This income is crucial, as the country has a small landmass but a vast exclusive economic zone (EEZ) of over 3.4 million sq km.

The primary threat to Kiribati's economy is climate change, which is causing ocean temperatures to rise. Scientists fear that tuna may migrate to cooler waters outside Kiribati's EEZ. This migration could reduce demand for fishing licenses, severely impacting the nation's finances. The global tuna market is valued at over $44 billion annually.

Kiribati earned $137 million from fishing licenses in 2024, a vital lifeline that has contributed nearly three-quarters of government income between 2018 and 2022, representing about two-fifths of the country's GDP. Tuna from the Western Central Pacific Ocean, including Kiribati's waters, accounts for more than half of global canned tuna supply.

As tuna stocks may shift eastward due to warming waters, Kiribati could lose over $10 million in fishing access fees annually by 2050 if greenhouse gas emissions remain high. Even under lower emission scenarios, local fishermen are predicted to see a catch decrease. This situation is compounded by rapid urbanization and a growing population, straining limited resources and exacerbating food security challenges.

To mitigate these risks, the United Nations' Green Climate Fund has launched a $156.8 million project to help Pacific Island communities adapt to climate change. This initiative aims to improve tuna stock prediction, enhance food security, and maintain government revenue. Kiribati is also expanding its own tuna processing facilities and exploring ocean farming, seeking to diversify revenues beyond fishing through tourism and renewable energy.