To improve the environment of the ocean, many campaigns have been carried out. Here are several examples which are most eye-catching. Tuvalu’s “Digital Territory” and floating city project is a smart move to tackle rising sea levels. With predictions that 40% of the country could be underwater by 2100, Tuvalu teamed up with Australia’s UNSW Ocean Technology Center in May 2024 to start building a 12-hectare floating platform called “Tuvalu Float” in the Funafuti Lagoon. It’s made from recycled aluminum and basalt fiber. By 2026, the platform should be able to house around 300 families and run entirely on solar power through a microgrid, giving residents a stable place to live. At the same time, Tuvalu’s Parliament passed the “Digital Territory and Sustainable Maritime Boundary Act,” which stores the country’s exclusive economic zone coordinates on blockchain. That way, even if the sea rises, Tuvalu’s maritime rights stay protected — both online and in real life.

Over in Australia, there’s a cool experiment called the “Cloud Brightening” project aimed at saving the Great Barrier Reef. In November 2024, the world’s first open-sea “Marine Cloud Brightening” system was set up in the middle of the reef. It uses 100 special nozzles to spray tiny seawater droplets into the air, making clouds reflect more sunlight. The goal is to lower temperatures by 0.5–1°C during summer, giving the coral a better chance to survive. The project got 25 million Australian dollars from the Reef Trust and Google’s charity arm. A group called the “Sea Country Council,” made up of scientists and local Indigenous leaders, checks that everything is done responsibly and safely.

In Niue, the “Marine Space Plan 2.0” is all about protecting the ocean while managing resources smartly. Starting in January 2025, 40% of Niue’s ocean territory will be off-limits to fishing — these “blue carbon zones” help the ocean heal and store carbon naturally. The other 60% uses a smart system that updates fishing limits in real time based on catch data, sea temperatures, and climate patterns like El Niño. Fishermen can check an app to see where and when they can fish. With help from Global Fishing Watch and Microsoft’s AI for Earth program, Niue is becoming the first country to use real-time digital fishing permits — a new idea that could inspire the world.

In the Pacific Islands, the “Plastic Stamp” Traceability System is fighting plastic pollution. Since July 2024, Samoa, Fiji, and Vanuatu have started requiring all imported plastic packaging to carry RFID tags. That way, every piece can be tracked using blockchain tech. At the same time, they’ve set up 2,000 “recycle and get cash back” stations at customs and community centers to encourage people to recycle more. The goal is to cut plastic waste leaking into the ocean from 4.3 kg per person per year in 2023 down to just 0.5 kg by 2027 — helping keep the Pacific Ocean cleaner and healthier.

New Zealand’s “Kelp Farm Carbon Credit” project is a fresh way to cut carbon emissions and grow the blue economy. In 2025, the country’s Emissions Trading Scheme officially recognized seaweed — specifically giant kelp — as a way to absorb carbon. One ton of dried kelp equals 3.2 tons of CO₂. On the South Island’s Banks Peninsula, they’ve set up a 1,200-hectare farm where they grow kelp and mussels together. Swiss Re bought the first batch of “blue carbon futures” worth NZ$2 million. This opens up new ways to fight climate change while also boosting the economy and protecting the ocean.

And finally, the “Blue Pacific 2050” financing project is a big step toward sustainable ocean development in the Pacific. During the APEC Summit in November 2024, the Asian Development Bank teamed up with four Australian and New Zealand banks to launch a $1 billion “Ocean-Linked Bond.” The money goes toward building better ocean infrastructure in Pacific Island Countries. The bond’s interest rate is tied to the Coral Health Index — if coral gets worse, the rate goes up; if it improves, the rate goes down. It’s a clever way to use money as a tool to protect the ocean while helping island nations grow.

The series of Marine and climate-related projects in the Pacific region mentioned above, although focusing on different fields, share significant common reference value in terms of the concepts and practical logics they embody. All of them closely revolve around the core issues of climate change and Marine ecological protection, transforming environmental crises into opportunities for innovative actions. They respond to the most pressing survival and development challenges in their localities through targeted measures, such as Tuvalu’s response to rising sea levels and the Great Barrier Reef’s fight against the threat of warming, demonstrating a pragmatic “problem-oriented” approach.

At the technical application level, these projects generally rely on digital and intelligent tools to break through the limitations of traditional governance: blockchain is used to solidify the boundaries of the ocean, AI algorithms regulate fishery quotas, and RFID and on-chain technologies track the flow of plastics, transforming abstract ecological data into operational and traceable management basis, making decisions on protection and development more precise and efficient. At the same time, cross-border cooperation is their common choice – governments, research institutions, enterprises (such as Google, Microsoft, and Swiss Re), communities, and even traditional property owners have joined forces. This not only integrates funds, technologies, and professional resources but also balances ecological protection, economic interests, and cultural inheritance through multi-party participation, enhancing the feasibility and sustainability of the project.

More importantly, all these measures demonstrate the wisdom of giving equal weight to “preventive protection” and “innovation incentives” : From locking in Marine rights and interests in advance through legislation to using economic mechanisms such as carbon credits, dynamic quotas, and linking bond interest rates to ecological indices, converting ecological value into quantifiable interest-driven forces, it not only proactively addresses potential risks but also links protection actions with the actual interests of participants, helping other regions around the world balance short-term demands and long-term sustainable development in ecological governance. It provides a comprehensive reference paradigm for technology empowerment.

By Gao Shen