Coastal villages throughout the Solomon Islands rely on selling fish for household incomes. Selling fish in Auki, Malaita Province, Solomon Islands. Credit: Catherine Wilson/IPS

By Catherine Wilson
SYDNEY, Australia, Apr 29 2026 (IPS)

It is an invisible contaminant that has been found in fisheries, an essential part of the food chain for many Pacific Islanders. Mercury, emitted from fossil fuel power generation and other industrial processes around the world, has now penetrated marine ecosystems in the Pacific Islands with detrimental consequences for people’s health and wellbeing.

But island states, supported by scientific expertise at the Secretariat of the Pacific Regional Environment Program (SPREP), the United Nations Environment Program (UNEP) and funding by the Global Environment Facility (GEF), the world’s largest multilateral fund  for the environment, are implementing the action needed. The Mercury Free Pacific campaign is forging progress to protect islanders and their natural habitats from poisoning.

“Our communities face mercury risks from two main sources: what we eat, fish, and what we use in our homes and workplaces,” Emelipelesa Sam Panapa, Chemical Management Officer at the Department of Environment in the Polynesian atoll island nation of Tuvalu, told IPS. “Fish is the most widespread and challenging risk. It is not just food; it is central to our culture, livelihood and food security.”

The Mercury Free Pacific Campaign has brought together Pacific Island nations and the expertise of the SPREP and UNEP and been made possible with funding by the GEF. Credit: GEF

Mercury is a natural element in the Earth that has been released into the atmosphere for millennia through volcanic events and rock erosion. But human-generated, mostly industrial, processes have accelerated the build-up of mercury emissions. Metal processing facilities, cement works, the production of vinyl monomer and coal-fired power stations are the biggest contributors to the high levels of mercury in the atmosphere today.

From 2010 to 2015 alone, global anthropogenic mercury emissions rose by 20 percent, reports the UNEP. Coal-burning processes account for about 21 percent of all emissions. And this is projected to increase if a further 1,600 planned coal-driven power stations, on top of the existing 3,700 worldwide, are built. Already mercury in the atmosphere is about 450 percent above natural levels, reports UNEP.

After travelling long distances, mercury emissions then deposit in oceans. And toxicity begins when natural bacteria in aquatic environments mix with mercury, transforming it into Methylmercury, which is a neurotoxin. In the Pacific region, Methylmercury has contaminated beaches, coral reefs and fisheries, including swordfish, shark, tuna and mackerel, that are commonly consumed daily. Seafood is an important source of protein for up to 90 percent of Pacific Islanders and contributes to cash-based livelihoods for about 50 percent, reports the Food and Agriculture Organisation (FAO).

Today mercury is named one of the top ten chemicals of concern to public health by the World Health Organization (WHO) and the danger is especially acute in women and children. It can, in higher doses, inflict damage on cardiovascular organs, kidneys and the nervous systems of pregnant women and subsequently affect organ development of the foetus.

A fisherman on the coast of Funafuti, Tuvalu, throwing a weighted net out into the seawater, a traditional form of fishing. Credit: Rodney Dekker / Climate Visuals

The results of a medical study conducted by the Biodiversity Research Institute (BRI) confirmed health concerns.  Testing for traces of mercury in 757 women, aged 18-44 years, in the developing island states of the Caribbean, Indian and Pacific Oceans, including the Cook Islands, Tuvalu, Kiribati, Tonga and Marshall Islands, revealed that 58 percent possessed a level in their bodies that exceeded the safe threshold of 1ppm Hg. Researchers concluded the most likely cause was the high consumption of contaminated fish. In comparison, women who consumed lower amounts of fish and seafood recorded the lowest levels of mercury.

However, islanders also encounter toxicity in their households. Mercury is used in the production of common imported consumer products, such as fluorescent light tubes, electrical switches, dental amalgam fillings and skin lightening cosmetics. But it is when these products reach the end of their lives and are discarded that mercury is at risk of lingering indefinitely in the environment.

“The core of the problem is that mercury-added products are not being separated from municipal solid waste, and there are no local facilities for the environmentally sound disposal of mercury waste,” Soseala Tinilau, SPREP’s Hazardous Waste Management Advisor, told IPS. Also, “medical waste incineration sites are identified as potential sources of mercury emissions to the air.” And in some locations, raw sewerage flows have contributed mercury waste due to affected products being washed down drains into waterways and the sea.

A challenge is that waste management systems in many Pacific Island countries are constrained by lack of capacity, technology, resources and infrastructure. “There are no local facilities for the environmentally sound disposal of mercury waste. Therefore, a system for packing, exporting and disposing of this waste in an approved facility abroad is a critical need,” Tinilau specified.

Fisheries, susceptible to mercury contamination, are a major source of food and protein for Pacific Islanders. Fish market, Port Moresby, Papua New Guinea. Credit: Catherine Wilson/IPS

Several years ago, numerous Pacific Island states, including Kiribati, Palau, Tonga, Tuvalu and Vanuatu, joined the Minamata Convention. The first global agreement to reform the ways in which mercury is used, phase it out in industries and develop better waste management practices, among other measures, came into effect in 2017.

Now governments in the region are drawing further on the power of multilateral collaboration in the Mercury Free Pacific initiative. The expansive mandate of the GEF-funded project includes conducting national surveys of mercury contamination, educating local communities about the risks, reviewing exposure to mercury-added consumer products, reforming waste management practices and assisting governments to develop relevant legislation.

The GEF is funding US$12.6 billion in environmental projects currently underway globally, which are expected to generate a further US$80.5 billion in co-financing. And it has a long view of its commitment to the Mercury Free Pacific project through its GEF Islands program, with goals outlined until at least 2030.

Anil Bruce Sookdeo, the GEF’s coordinator for Chemicals and Waste, elaborated that in the Pacific the GEF has provided US$1.5 million for gathering mapping data, its analysis and developing action and remedial plans in eleven Pacific Island nations, including the Federated States of Micronesia, Samoa, Kiribati, Tuvalu and Vanuatu.

A further US$2 million is allocated to supporting national responses, such as devising effective legislation, community awareness programs and improving waste management processes. The campaign “represents a long-term regional objective, rather than a time-based project and requires sustained commitment and coordinated action by Pacific countries, regional institutions and partners,” he emphasised.

GEF funding has empowered Tuvalu, a country comprising nine coral islands and 11,800 people in the South Pacific, to make strides in its whole-of-society response to the issue.  The government has been able to strengthen its capacity and expertise, organise media awareness campaigns and oversee consultation with industries, communities and civil society organisations.

“For the first time, we have a national estimate of where mercury is coming from…we are beginning to understand the risks to our people and we have a roadmap for future action,” Panapa said in outlining the benefits of the Mercury Free Pacific initiative. At the same time, “these efforts represent the beginning of a longer journey to build community understanding and change behaviours related to mercury-added products, waste disposal and dietary choices.”

But a mitigation goal at the top of the list is to prevent mercury from reaching the islands. “Making marine life safe from mercury contamination is not about eliminating mercury already present in the ocean, but about preventing further contamination and managing the risk of exposure,” Tinilau said.

This means, among other measures, restricting the importation of mercury-added consumer products and galvanising global action to halt mercury emissions. Global consensus on phasing out coal-fired power stations and reforming industrial processes would be a start.

Pacific Island countries are demonstrating the political will and action with “regional coherence, national ownership and sustained momentum toward reducing mercury risks to human health, the environment and food systems in the Pacific,” emphasised Sookdeo from the GEF. Now, big emitters need to heed the urgency of reducing emissions at their source.

Notes: The Eighth Global Environment Facility Assembly will be held from May 30 to June 6, 2026, in Samarkand, Uzbekistan.
This feature is published with the support of the GEF. IPS is solely responsible for the editorial content, and it does not necessarily reflect the views of the GEF.

IPS UN Bureau Report

Follow @IPSNewsUNBureau