
Local peoples experience wave after wave of direct harm from the gas projects in the Rovuma Basin of Cabo Delgado, while gas companies, financial institutions and decision makers continue to justify their involvement. The destruction of sensitive marine ecology and the projects’ high contribution to climate change must be considered when assessing the impacts on communities. The combination of resettlement violations, lost food fields, exclusion from fishing areas, and physical and chemical pollution from dredging activities, is already directly ruining the ability of hundreds of families to continue their livelihoods and survival activities.

Warnings about the environmental and social impacts of Cabo Delgado gas exploitation have been issued by activists and academics since exploration activities began in 2006 [1]. Regardless, projects are creeping on – even in the midst of violent conflict and criminal proceedings for alleged human rights violations [2]. While the Mozambique State hangs on to the promise of meagre – and reducing – revenues sometime in the future, local peoples have already lost and are continuing to lose their means of survival [3]. The harm to nature is worse than anticipated, and the harms to communities are becoming irreparable.
Independent researcher Chris Engelbrecht warns in his 2025 assessment of the environmental risks of the gas projects that the region is highly vulnerable to the combined impacts of climate change and alien invasive species, and would be significantly harmed by chemical, acoustic, and physical pollution resulting from gas activities [4]. The local communities, whose livelihoods are based on natural resources, remain most vulnerable to these combined impacts.
The marine area is home to iconic species such as humpback whales and loggerhead turtles, the steep marine shelf is potentially a critical habitat, and species new to science have been identified around potential well sites in deep waters. However, Engelbrecht stresses that a thorough biodiversity study of the marine area affected is lacking, and without one, there is no way to know what species and habitats would be lost as a result of gas activities. Critically, there is also no adequate assessment of the resultant impact on local economies and nutrition.
In 2025, communities reported severe harm to near-shore habitats from dredging in Palma Bay and around Tecomaji Island for marine infrastructure and shipping [5]. Many of the families living on the island now had previously lived in villages on the Afungi Peninsula, and had been required to relocate for the gas projects. Shellfish and shallow-water fish are very important for local nutrition, and are mainly collected by women and children for both food and sale. Coral reefs and seagrass beds are key habitats for these species. Data Desk exposed that dredging since around October 2024 has cut through coral reefs on the northern end of Palma Bay [6]. It is expected that dredging in the Bay would produce at least 12 million cubic metres of waste – which is toxic and smothers corals and seagrass.
Overall, gas exploitation presents the risk of a number of significant impacts on ecosystems:
- Chemical pollution from gas and condensate leaks, spills from operations and marine traffic, and air pollution from the processing plants.
- Toxic gas and gas condensate leaks from wells and pipelines. Condensate lingers for long periods below the surface and is more toxic than crude oil.
- Alien invasive species which are introduced by ships severely impacts local ecology.
- Ongoing noise pollution from drilling for the gas wells, operations of the floating plants, and the gas related marine traffic – including massive LNG carriers.
- Physical damage to coral reefs, seagrass beds, and other habitats in the deep-sea and near-shore areas, from drilling for gas wells, and dredging for pipelines and marine infrastructure.
- The waste from drilling and dredging is toxic, reduces water quality, and can smother seafloor creatures and habitats.
- Significant contribution to climate change of at least 4,5 gigatonnes of carbon dioxide equivalent.
Engelbrecht urgently recommends for more data to enable broader and more reliable quantification of the combined impacts of the gas extraction, existing impacts, and emerging stresses resulting from locked-in climate change impacts. He urges application of the Precautionary Principle – which is absent in the gas project environmental impact assessments – and a moratorium on the projects until it can be proven that they can cause no irreversible harm.
Similar warnings and recommendations made well over a decade ago were ignored by decision makers, the gas companies, and financial institutions. Already in 2009, communities had reported ecological disturbance, species loss, and reduced fishing catches following seismic exploration, according to interviews conducted by Joshua Dimon and Daniel Ribeiro two months after the seismic surveys [7]. They reported fish and shellfish deaths, the deaths of six turtles, and red tides with related health impacts. The Maganja community reported a mass die-off of bottom-dwelling fish – with carcasses covering several kilometres of beach – as well as the disappearance of shellfish. A detailed study was not conducted (or is not available in public), although the company reported “no social impacts… no complaints”.

In addition, Dimon and Ribeiro report inadequate communication with communities at the time, resulting in hearing injuries among fishermen, and extended periods of not fishing with resultant losses to diet and income. They also report discrepancies in compensation for affected fishing communities compared to tourism operators, and no compensation at all for the shallow-water seismic programme during which fishermen did not fish.
This pattern of inadequate consultation, communication, and monitoring continues in the gas project relationships with local peoples [8].
Since the start of the project members of the Maganja community have been affected by land grabs and remain with many significant grievances. Following unsuccessful negotiations with the gas company, ten community members faced intimidation in January 2025, an illustration of the darker dynamics around free prior and informed consent in relation to the projects [9]. Overall, thousands of people in many communities have been affected by resettlement and loss of their food fields, and thousands more have been affected by restricted access to the sea and coast, and attempts to secure more land – including for roads [10]. There are now new reports of communities being asked to leave their homes on Tecomaji Island.
While the gas projects make up stories of progress and wealth for Mozambique, the harm to nature combined with the loss of homes, lands and access to natural resources, has directly reduced living conditions for thousands of people, and transferred an immeasurable cost to local communities. It in any case remains to be seen what revenues will eventually reach Mozambique, considering the mounting costs demanded from the State [11], and whether these revenues will be used for local welfare.
For more information, read:
[1] Mozambique LNG: Financial institutions so far refrain from taking a stance on allegations of severe human rights violations; Stop the ravaging of Cabo Delgado; Why financial institutions should politely look away from Eni’s Coral North; Fuelling the crisis in Mozambique; (GNL de Moçambique: Instituições financeiras abstêm-se até ao momento de tomar posição sobre alegações de graves violações dos direitos humanos; Parem a devastação de Cabo Delgado; Porque é que as instituições financeiras devem ignorar educadamente o projecto Coral North da Eni; Fomentando a crise em Moçambique;)
[2] Mozambique LNG relaunch: banks urged to withdraw from the project – StopMozGas; ECCHR: TotalEnergies faces criminal complaint for complicity in war crimes, torture and enforced disappearance in Mozambique(Relançamento do projecto GNL de Moçambique: bancos são instados a retirar-se do projecto – StopMozGas; ECCHR: TotalEnergies enfrenta queixa-crime por cumplicidade em crimes de guerra, tortura e desaparecimento forçado em Moçambique)
[3] Too late to count: a financial analysis of Mozambique’s gas sector – Report by OpenOil; Energy projects fuel hunger in Palma; (Tarde demais para contar: uma análise financeira do sector do gás de Moçambique – Relatório da OpenOil; Projectos energéticos fomentam a fome em Palma;)
[4] True Risk – The environmental risks of deep-sea gas exploitation in the Rovuma Basin of Cabo Delgado, Mozambique (Risco real – Os riscos ambientais da exploração de gás em águas profundas na Bacia do Rovuma, em Cabo Delgado, Moçambique)
[5] Direct conversation with Justiça Ambiental! (Conversa directa com a Justiça Ambiental!)
[6] Dredging in Palma Bay, Mozambique (Dragagem na Baía de Palma, Moçambique)
[7] Oil or Development? A report by JA! (Petróleo ou Desenvolvimento? Um relatório da JA!)
[8] ‘The land belongs to Mozambicans, not to France’; Resettlement chaos continues at Afungi gas site; From promised land to landlessness – intra-community conflicts in Palma district linked to gas projects; From hope to old age – testimonials (‘A terra pertence aos moçambicanos, não à França’; O caos do reassentamento continua no terreno de gás de Afungi; Da terra prometida à falta de terra – conflitos intracomunitários no distrito de Palma ligados a projectos de gás; Da esperança à velhice – testemunhos)
[9] Maganja community resists intimidation and demands justice in the compensations promised by TotalEnergies(Comunidade de Maganja resiste à intimidação e exige justiça nas compensações prometidas pela TotalEnergies)
[10] IAM Assessment Report Rovuma LNG Project, Mozambique (Relatório de Avaliação do IAM Projecto Rovuma LNG, Moçambique)
[11] Mozambique LNG will resume, but with even fewer expected benefits for Mozambicans (O projecto GNL de Moçambique será retomado, mas com ainda menos benefícios esperados para os moçambicanos); Transparência fiscal em transição












