A recent statement from the Ministry of Marine Affairs and Fisheries has put a spotlight on the sensitive issue of heavy metal contamination in seafood exports. Despite concerns raised by the US FDA, the ministry's Quality Assurance Agency stands firm, declaring no official evidence of contamination in tuna or other seafood from Obi Island.
But here's where it gets controversial...
Mochamad Aji Purbayu, the agency's spokesperson, highlights the migratory nature of tuna, suggesting potential contamination could originate far from capture sites. Under Indonesian guidelines, the agency is duty-bound to investigate export units if food safety violations are officially reported by destination countries.
"If heavy metals are involved, we trace the fish's origin, including its fishing grounds," Purbayu emphasizes.
The agency's monitoring, guided by the 2020 decree of the Marine and Fisheries Quarantine Agency (BKIPM No. 96/2020), covers fish freshness, residues, hazardous substances, marine biotoxins, and environmental quality. Purbayu assures that existing tests on fish samples and surrounding waters show no heavy metal levels exceeding Indonesian or international standards.
Monitoring in areas near Obi, including Sorong, Maluku waters, and parts of Sulawesi, further supports these findings, with no violations reported.
However, the agency clarifies its role, stating it lacks criminal-law enforcement authority. "We are a quality-assurance body," Purbayu responds to calls for legal action against mining-related pollution.
A study by Khairun University researchers adds another layer to the discussion. Their June 2025 environmental observation examined coastal conditions in Kawasi and Soligi villages in South Halmahera. While small pockets of turbidity were found near Kawasi's coast, the study notes improvements following runoff-management efforts, including sediment ponds and the use of ferrous sulfate.
"Such measures are standard practice in mining areas," the report states.
Residents in Soligi attribute murky waters to natural river flows and mangrove sediment, describing turbidity as seasonal, worsening during heavy rains and strong waves. The study, however, does not report heavy metal levels exceeding safety thresholds.
But the North Maluku chapter of the Indonesian Forum for the Environment (Walhi) challenges this narrative, claiming local contamination is "an open secret."
"We found heavy metals in fish caught by local fishermen in 2023," says Walhi's mining advocacy manager, Muballigh Tomagola. While acknowledging uncertainty about the source, whether smelter discharge or upstream mining runoff, Muballigh highlights Kawasi's mountainous terrain, increasing runoff risks during heavy rains.
Walhi plans public forums and is preparing documentation to potentially file complaints against Harita Group's operations, even considering bringing residents before the National Commission on Human Rights (Komnas HAM).
Fishermen in Soligi and Kawasi primarily catch large pelagic species like tuna and skipjack, as well as smaller pelagic and demersal fish. With the area's economy heavily reliant on fisheries, government monitoring and community concerns continue to shape debates over the environmental impacts of nickel mining and smelting, a key focus of Indonesia's electric-vehicle supply-chain ambitions.
And this is the part most people miss...
The controversy surrounding heavy metal contamination in seafood exports highlights the complex interplay between environmental concerns, economic reliance, and the challenges of regulating industries with potential ecological impacts. It raises questions about the effectiveness of current monitoring practices and the role of community engagement in holding industries accountable.
What are your thoughts on this sensitive issue? Do you think the current measures are sufficient, or is more action needed to ensure the safety of our seafood and the health of our oceans? We'd love to hear your opinions in the comments below!
