The Lungs of the Ocean

Seagrass meadows offer several ecosystem services that benefit human well-being. Referred to as the "lungs of the sea," one square meter of seagrass can produce 10 liters of oxygen each day through photosynthesis. Seagrass leaves also absorb nutrients and slow the water flow, trapping particles of sand, dirt, and silt. Unfortunately, seagrass meadows have been disappearing globally due to human activities, and their decline threatens the vital ecosystem services they provide.

Seagrass serve as vital nurseries for fish and invertebrates, providing a safe environment for their eggs, larvae, and juveniles to mature. They are also rich in plankton, small invertebrates, and algae, making them important feeding areas for many species.

Seagrass meadows are also a critical component in mitigating climate change as they are one of the most effective natural blue carbon sinks on the planet. They are extremely efficient at carbon sequestration, averaging ~830 Kg of carbon stored per hectare per year, which is about 30 times higher than that of terrestrial forests.

Working with coastal communities to transform behaviors for ocean protection.

We have partnered with Ocean Alive, Portugal’s first non profit cultural cooperative dedicated to ocean protection, to begin the conservation of 1 hectare of seagrass meadow in the Sado Estuary of Setúbal, Portugal.

Led and operated by women, this seagrass protection and community education project aims to safeguard a naturally emerging seagrass meadow in Cambalhao Bay. Unlike a conventional restoration project, the objective is to mitigate the detrimental impact of anchoring and poor navigation and protect the meadow.

Project Partner

Ocean Alive

Ocean Alive is a non profit cultural cooperative that works with coastal communities to transform behaviors for ocean protection. 

SeaTrees is collaborating with Ocean Alive to protect a naturally emerging seagrass meadow at Cambalhao Bay in Portugal's Sado Estuary by engaging local "Seagrass Guardian" ambassadors. This project will fund the official scientific mapping of the meadow and the associated costs of community engagement, education, and training. The goal is to mitigate the harmful impacts of anchoring and navigation in the area.

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A little further reading...

Keepers of the Sea

We will be collaborating with the Keepers of the Sea, a group of women from the fishing community along the Sado River who work to protect seagrass meadows. Currently, there are 18 Keepers of the Sea, who play a vital role in encouraging their peers in the fishing community to make behavior changes that will help eliminate three major threats to seagrass meadows: litter from shellfishing, anchoring on the seagrass meadows, and destructive fishing.

A Fragile Ecosystem - Disappearing Worldwide

The seagrass meadows in Portugal have been rapidly depleting, resulting in a scarcity of marine life and adversely impacting the fishing community, especially the fisherwomen, leading to unemployment and devaluation. This depletion has also contributed to the decline of the resident dolphin population.

Sustainable Development

This project provides long-term employment for the local community. This in turn drives other Sustainable Development benefits.

Women-led

Sustainable Development in Portugal

Led and operated by women, this seagrass protection and community education project aims to safeguard a naturally emerging seagrass meadow in Cambalhao Bay. Unlike a conventional restoration project, the objective is to mitigate the detrimental impact of anchoring and poor navigation and protect the meadow.

Key Impact Metrics:

  • Conducts official scientific mapping of the newly emerging seagrass meadow.
  • Engages in comprehensive research activities to understand and protect the ecosystem.
  • Recruits "Seagrass Guardian" ambassadors from maritime touristic enterprises.
  • Educates local staff on the meadow's value and implements good practices.
  • Fosters engagement and contributions from ambassadors for future mapping and protection.
  • Promotes marine education, behavioral changes, and conservation efforts.
  • Advocates for national policy changes to protect Portugal's seagrass meadows.
  • Empowers women in the fishing community through new professions and leadership roles in ocean conservation.
  • Creates professions for local community members in marine education guides, awareness agents, and seagrass monitors.

No Poverty

Training Maritime-tourism companies (MTs) to become Seagrass Guardians, promoting an active role in the conservation of the Cambalhão Bay seagrass meadow.

This project, through its aims of conducting research, mapping the seagrass meadow, and recruiting "Seagrass Guardians" from maritime touristic enterprises, actively contributes to climate action by preserving this vital blue carbon sink and fostering sustainable ecosystem practices.

Gender Equality

This project collaborates with the Keepers of the Sea, a dedicated group of 18 women from the fishing community along the Sado River. These women, operating under the guidance and employed by Ocean Alive, play a crucial role in advocating for behavior changes within the fishing community to address major threats to seagrass meadows, including litter from shellfishing, anchoring on the meadows, and destructive fishing practices. 

The Keepers of the Sea program empowers these women to become leaders in ocean protection, allowing them to develop new professions such as marine education guides, awareness agents, and seagrass monitors. 

Through their active engagement, these women contribute to the fight against climate change, promote sustainability, and advocate for policies prioritizing environmental best practices, thus fostering gender equality within the context of marine conservation.

Climate Action

Led by women, this project aims to protect a naturally emerging seagrass meadow in Cambalhao Bay by mitigating the detrimental impact of anchoring and poor navigation.

The rapid depletion of seagrass meadows in Portugal has led to a scarcity of marine life, impacting the fishing community, particularly fisherwomen, resulting in unemployment and devaluation. 

Additionally, the decline in seagrass has contributed to the diminishing resident dolphin population. Seagrass meadows, known as the "lungs of the sea," offer essential ecosystem services such as oxygen production, nutrient absorption, and carbon sequestration.

Life Below Water

This seagrass protection project aims to safeguard the invaluable ecosystem services provided by seagrass meadows. Seagrass leaves contribute to nutrient absorption and regulate water flow by trapping sand, dirt, and silt particles.

The global decline of seagrass meadows due to human activities poses a threat to these essential ecosystem services. In the Cambalhão seagrass meadow, our project focuses on preserving crucial marine habitats, acting as vital nurseries for fish and invertebrates, ensuring a safe environment for their eggs, larvae, and juveniles to mature.

This meadow hosts emblematic fauna species such as greater pipefish, eel, cuttlefish, and octopus, along with various fish, mollusks, crustaceans, and invertebrates. Through exploratory and monitoring activities, our project actively contributes to the conservation of these diverse marine species and their habitats, supporting the overarching goal of maintaining life below water.