Saving Mozambique’s seagrass

Creating the conditions for sustainable seagrass restoration in Maputo and Inhambane bays 

“People can’t think of Inhaca without thinking about seagrass,” says Salamao Bandeira of Maputo’s Eduardo Mondlane University, knee-deep in the shallow waters on the seaward side of Maputo Bay, as he points at the shores of Inhaca Island.

Nearby, residents are submerged waist-deep in the sea, taking advantage of the low-tide to fish in the current or hunt for clams and crabs in the seagrass. 

“It means a lot to the people here—it’s not just a resource, it’s part of the way of life,” he adds.  

Indeed, seagrass helps sustain life here in the Maputo and Inhambane bays of Mozambique. The shrimps, sea cucumbers, clams and crabs found among these underwater meadows are a source of food and employment for local communities, says Bandeira.  

But experts warn that destructive shellfish harvesting—along with the flooding and sedimentation from rivers emptying into the bay—are destroying seagrass beds at a rapid rate.  Research indicates that 86 per cent of seagrass meadows have been lost in the northwest of Maputo Bay alone—putting local culture, jobs and food security at risk. 

SeagrassSeagrass meadows at low tide in Maputo Bay, Mozambique. Photo by UNEP/Nairobi Convention

Eduardo Mondlane University, with the support of the Government of Mozambique, wants to reverse this trend by identifying and restoring seagrass sites in Inhambane and Maputo bays. Nearby communities will also learn non-destructive fishing practices and draft a local seagrass management plan under the project. The recently produced Western Indian Ocean Seagrass Restoration Guideline (link not yet available) can also provide much-needed technical guidance on restoration techniques. 

More seagrass, more shellfish

The proponents foresee immediate benefits from the implementation of the project. With more seagrass comes more space for shellfish to grow, which could give a boost to the local fisheries businesses and improve food security for the communities. Tourists may also increasingly start visiting the bays, attracted to the wide array of marine life supported by seagrass.  

The health and recreation of the 60 per cent of the Mozambican population who live along the coast could also benefit from more seagrass. “Seagrass acts as a kind of oxygen battery for the ocean,” says Bandeira. “It removes and prevents dangerous pathogens from polluting the water, making the sea safer and cleaner for fisheries.” 

Other environmental advantages of this project include protecting unique species like the dugong. When wading among the seagrass, the shovel-like tracks of the dugong, who feed off the bays’ seagrass, are clearly visible. Increased seagrass means an increased source of food for this species, critically endangered in the Western Indian Ocean.

Successful implementation of the project will also help Mozambique achieve its commitments under Sustainable Development Goal 14.2 on sustainably managing and protecting marine and coastal ecosystems.