World Tuna Day Brings Positive Developments for Sustainable Fishing

May 2 marks World Tuna Day, and this year, the news is encouraging for seafood lovers and environmentalists alike. A recent survey conducted by Appinio on behalf of the Marine Stewardship Council (MSC) reveals that a significant 63.3% of Germans consume tuna at least once a month. This trend reflects tuna's global popularity as one of the most sought-after fish species.

The MSC, a nonprofit organization dedicated to promoting sustainable fishing practices and combating overfishing, has been advocating for increased sustainability in tuna fisheries. Recent efforts have resulted in notable progress towards healthier fish stocks and more responsible fishing practices, ultimately benefiting consumers and the environment.

Here are five positive updates for World Tuna Day 2025:

1. Improved Fish Stocks: Contrary to the global trend of overfishing, tuna stocks are showing signs of recovery. Currently, only two out of 23 commercially harvested tuna stocks are considered overfished, a significant improvement of about 10% compared to the previous year. For German consumers, this is especially relevant as the True Bonito, the tuna species commonly found in canned products, is not overfished in any ocean, demonstrating the effectiveness of sustainable fishing practices.
2. Increase in Sustainable Catches: The percentage of tuna caught through sustainable fishing methods has risen markedly in recent years. As of now, 53% of all tuna catches come from environmentally responsible, MSC-certified fisheries, a stark increase from just 22% in 2018. This shift is attributed to improved international regulations, research investments, and enhanced monitoring, alongside consumer and retailer demand for sustainable products.
3. Retail Sector Commitment: In a significant advancement for the German retail market, the proportion of sustainable tuna sold in supermarkets has reached 82% for the first time in 2025. Major retailers have now adopted sustainable practices across their private label products, setting a global benchmark for tuna sustainability.
4. Enhanced Consumer Choices: The growing availability of sustainable tuna products has led to greater variety for consumers who prioritize environmentally friendly choices. From quick meals featuring canned tuna to gourmet dishes with yellowfin tuna, shoppers can now find a sustainable option to suit their preferences and budgets. However, consumers are advised to ensure their purchases are marked with the blue MSC label, even for promotional items.
5. Health Benefits of Tuna: A recent survey indicates that 63% of Germans view tuna as a healthy food option, with 50.3% recognizing it as a high-quality protein source. With a protein content of 22 to 29 grams per 100 grams, tuna surpasses many other fish varieties. It also boasts valuable nutrients such as Omega-3 fatty acids, vitamins, and minerals that are beneficial for overall health. Importantly, recent tests show that canned True Bonito tuna on the German market contains safe mercury levels, addressing consumer concerns about contamination.

Ensuring that tuna remains a reliable source of nutrition for future generations requires treating it as a delicacy and preventing overfishing. Healthy fish stocks are essential for sustaining a nutritious food supply.

For more information, refer to the MSC Tuna Report 2025.