The oceans, the true lungs of our planet, produce more than 50% of the oxygen we breathe, absorb nearly 30% of the CO₂ generated by humanity, and play a central role in climate regulation. Yet, by 2025, they are more threatened than ever. Facing unprecedented challenges, the urgency to act is clear. This article explores the major issues of this crucial year for the oceans and the solutions that, if implemented quickly, could make all the difference.
The major challenges for the oceans in 2025
1.1. Plastic pollution: a gobal plague
Each year, 11 million tons of plastic end up in the oceans. These wastes take centuries to decompose, destroying marine ecosystems and entering the food chain through microplastics. By 2025, plastic production continues to rise, directly threatening biodiversity and human health.
1.2. Ocean warming and acidification
Since the beginning of the industrial era, the oceans have absorbed over 90% of the excess heat generated by greenhouse gas emissions. The results?
- Mass coral bleaching: 50% of coral reefs have disappeared over the last 30 years.
- Ecosystem changes: Marine species are migrating towards the poles, disrupting food chains.
- Acidification: Increased acidity is impacting shellfish, crustaceans, and other essential organisms.
1.3. Overfishing: threatened stocks
According to the FAO, nearly 35% of global fish stocks are exploited at unsustainable levels. By 2025, some species that were once abundant, such as bluefin tuna and cod, are on the brink of collapse, threatening the millions of people who depend on fishing for their livelihoods.
Solutions to save the oceans
2.1. Innovate to reduce plastic pollution
Inspiring initiatives are multiplying, such as:
- The #Ocean Cleanup, which uses floating systems to collect plastics in ocean gyres.
- Bioplastics made from algae or organic waste, which could replace conventional plastics.
These innovations must be supported by ambitious public policies, including the banning of single-use plastics and the development of a circular economy.
2.2. Protect marine ecosystems
Marine Protected Areas (MPAs) are a powerful tool for preserving biodiversity. In 2025, only 8% of the oceans are protected, far from the 30% target set by the Convention on Biological Diversity for 2030. Initiatives such as those in the Galápagos Islands, where combined efforts from governments and NGOs have reduced illegal fishing, show that it is possible to effectively protect sensitive areas.
2.3. Encourage sustainable fishing
The transition to sustainable fishing practices is essential. This involves:
- Using selective techniques to avoid unwanted catches.
- Promoting labels such as MSC (Marine Stewardship Council) to ensure responsible practices.
The call for collective mobilization
To save the oceans, every actor has a role to play:
- Governments must accelerate the implementation of international agreements, such as the high seas treaty adopted in 2023.
- Businesses must adopt economic models that respect ecosystems.
- Citizens can act daily by reducing plastic consumption, supporting local initiatives, and raising awareness among those around them.
In 2025, the oceans are at a crossroads. In the face of urgency, it is still possible to act to preserve this shared heritage. Every effort counts, whether it be through technological innovations, ambitious policies, or individual actions.
At Seawards, we firmly believe that solutions exist. Together, let’s protect the blue heart of our planet for future generations.
