Oceans cover more than 70% of Earth’s surface and support the food, climate, and biodiversity systems that billions of people depend on. This archive tracks real progress in marine conservation — from expanding protected areas and restoring coral reefs to reducing plastic pollution and rebuilding fish populations. Each story focuses on what’s working and who is making it happen.
The Andfjorden marine protected area shelters coral reefs, kelp forests, and fish nursery grounds, along with waters used by whales and seabirds. Reference zones ban bottom trawling so scientists can study its effects. But the rules are not the same everywhere, and fishing groups, the military, and conservationists all wanted something different. Here is what the new rules cover, and what they leave open.
The High Seas Treaty covers nearly half of Earth’s surface, including international waters and the seabed, and took effect worldwide in January. It sets up environmental reviews of high-seas activities and lets countries propose marine protected areas there. Canada is backing its commitment with 24.4 million Canadian dollars over five years, and the treaty applies to it from late October. Only 1.5% of the high seas is protected today.
Māori co-governance of ocean territory just got a concrete, working model. Five new marine reserves along New Zealand’s southeastern coast grant the Kāi Tahu equal decision-making authority alongside the government, with a jointly run ranger team conducting restoration and research across protected seabed, reefs, and kelp forest. The full reserve network remains incomplete, one area faces a boundary dispute, and current coverage falls far short of global conservation targets. Research consistently shows conservation succeeds when the people who know a place best hold real authority over it — and this model may become a blueprint for Indigenous ocean governance worldwide.
South Africa’s highest court has handed Indigenous and rural fishing communities a permanent, binding victory — one that sets a new legal standard for who gets a say before oil companies drill near vulnerable coastlines. The Constitutional Court ruled that Shell and Impact Africa never meaningfully consulted the Mpondo and other communities whose livelihoods and spiritual lives are tied to the Wild Coast, also citing international climate obligations. Whether South Africa will reform its consultation process — or force the next community into the same grueling legal fight — remains an open question.
Humpback whales are staging one of the most remarkable comebacks in modern conservation history, with southern hemisphere populations growing from fewer than 10,000 at the peak of commercial whaling to more than 100,000 today. Last December, a South African couple counted 299 humpbacks gathered in a single group — what experts describe as likely the largest such sighting on record. It’s a living signal of what decades of sustained international protection can achieve. But the recovery is fragile: shipping traffic around southern Africa quadrupled after 2023, raising serious collision risks for whales that took generations to return.
French Polynesia’s ocean protection milestone shows what’s possible when communities lead from the start — over twelve years of public meetings, cultural expeditions, and local scientific studies shaped every boundary. The fully protected zones cover waters around the Austral, Marquesas, and Western Society islands, sheltering sharks, whales, and species found nowhere else, while artisanal fishing zones preserve traditional livelihoods alongside strict conservation. Enforcing boundaries across some of Earth’s most remote ocean remains a real challenge. Still, this community-rooted model offers a hopeful blueprint as nations race toward the 30% goal.
Tuna recovery has reached a milestone that ocean scientists have been working toward for generations — for the first time since scientists began tracking these stocks in 2011, none of the world’s 23 major commercial tuna stocks are classified as overfished. That turnaround reflects decades of international cooperation, science-based catch limits, and harvest strategies that now cover more than half of the global tuna catch. Getting all 23 stocks out of the danger zone while total catch was simultaneously rising shows that abundance and sustainability can move together. It’s a hopeful proof of concept for global fisheries management everywhere.
Papua New Guinea just pledged to protect roughly 200,000 square kilometers of Pacific Ocean — an expanse nearly the size of the United Kingdom.
The proposed Western Manus Marine Protected Area sits inside the Coral Triangle, often called the Amazon of the seas, and a 2024 National Geographic Pristine Seas expedition there documented deep-sea species never before recorded in PNG waters — including the elusive yokozuna slickhead. Researchers also noticed fewer large predators than expected, a quiet signal that even these remote waters need a break from fishing pressure.
If Papua New Guinea follows through with real enforcement, this single reserve would mark a meaningful step toward the global goal of protecting 30% of the ocean by 2030 — and a hopeful model for ocean stewardship everywhere.
Scotland’s South Arran Marine Protected Area is teeming with life again, ten years after bottom trawling was restricted across much of the zone. Scientists pulled up just 100 liters of sediment and counted more than 1,500 organisms representing over 150 species — spoon worms, tower snails, and tiny “gardeners of the seabed” that quietly cycle nutrients and lock carbon into the ocean floor. Researchers found three times more organisms and twice the species diversity compared to nearby unprotected waters, all without any active restoration. The lesson is beautifully simple: lift the nets, wait, and life returns. For Europe’s battered seafloors — and for marine recovery efforts worldwide — South Arran is a quiet, powerful proof of concept.
Colombia has already protected 47.4% of its marine and coastal areas, blowing past the global 30×30 goal that 196 nations pledged in 2022. On land, it has reached 26.3% and is aiming for 34% by 2030, with much of that progress shared with Indigenous communities, Afro-descendant territories, and private landowners. The country’s approach blends a Switzerland-sized ocean sanctuary off the Pacific coast with more than 1,400 small civil society reserves, including a recovering cloud forest where mountain springs have returned and neighbors are planting native corridors. As the world falls behind on biodiversity targets, Colombia offers something rare: a working, inclusive model that other countries can actually learn from.
