Marine conservation

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.

Offshore oil rig at sunset, for article on offshore drilling ban

Biden permanently bans offshore drilling in 625 million acres of ocean

Offshore drilling is now off the table across 625 million acres of U.S. coastal waters, thanks to a sweeping executive action from President Biden. The protections cover the entire East Coast, the eastern Gulf of Mexico, the Pacific shores of Washington, Oregon, and California, and parts of Alaska’s Northern Bering Sea. What makes this move different is its staying power: Biden invoked a 1953 law that legal experts say can’t easily be undone without Congress. Alongside the ocean announcement, two new national monuments in California — both championed by Native tribes — bring his total conserved lands to 10. It’s a quiet but powerful reminder that some places are simply too precious to drill, and that lasting protection is possible when law, science, and community all pull in the same direction.

Cargo ship from above, for article on Baltic Sea wastewater ban

Finland becomes world’s first country to ban cargo ships from dumping wastewater

Finland just became the first country in the world to ban cargo ships from dumping wastewater in its coastal waters, extending a rule that previously only applied to passenger ferries. The Baltic Sea desperately needs the help: it’s shallow, slow to refresh, and roughly 2,000 ships cross it every day, each carrying enough crew to rival a small town’s worth of sewage. Years of patient work by the Baltic Sea Action Group helped move shipping companies from voluntary pledges to binding law, and port wastewater collection has already tripled over the past five years. Finland’s jurisdiction ends at its territorial waters, but the law offers a tested blueprint other Baltic nations can follow — and a reminder that national legislation can outpace slow-moving global rules when ecosystems can’t wait.

Island off the shore of the Azores, for article on pre-Portuguese Azores settlement, for article on Azores marine protected area

The Azores creates largest marine protected area network in the North Atlantic

Marine protected area status now covers 287,000 square kilometers around Portugal’s Azores islands, creating the largest such network in Europe. Half of that expanse bans fishing and other harmful activities outright, giving deep-sea corals, whales, manta rays, and sharks real room to thrive. Scientists mapped the zones using underwater cameras and deep-sea surveys, working alongside local fishers and officials so the boundaries reflect both ecological richness and community life. The Azores sits at a crossroads of Atlantic currents, with hydrothermal vents and seamounts that support some of the region’s most diverse marine communities. With less than 3 percent of the global ocean currently fully protected, this decision offers the worldwide 30×30 movement something it badly needs — a credible, science-led example others can follow.

Birds flying at the beach on a sunny day, for article on Chumash Heritage National Marine Sanctuary

California gets final approval for nation’s third-largest marine sanctuary

Chumash Heritage National Marine Sanctuary now protects 4,543 square miles of California coastline, making it the country’s third-largest marine sanctuary and the first anywhere in the U.S. shaped from the start by Indigenous tribes. The waters off San Luis Obispo and Santa Barbara counties are so biologically rich that one Chumash leader compares them to the Galápagos, and they’re now off-limits to oil and gas exploration. The designation also safeguards ancient village sites resting on seafloor that was dry land thousands of years ago. After a decade of tribal-led advocacy, this sanctuary offers a new model for ocean conservation — one where the people with the longest relationship to a place help decide its future.

Good news for marine protection, for article on Australia ocean protection

Australia to protect 52% of its oceans, more than any other country

Australia’s ocean protection just leveled up in a big way, with a sub-Antarctic marine reserve quadrupling to add 300,000 square kilometers of safeguarded waters — an area roughly the size of Italy. The expansion around Heard and McDonald Islands shields glaciers, albatross, macaroni penguins, elephant seals, and fish found almost nowhere else, keeping mining and new commercial fisheries out of one of the planet’s least-disturbed places. With this move, Australia now protects 52% of its marine territory, leaping past the global 30-by-2030 target it pledged to just two years ago. As nations everywhere search for tools to reverse ocean biodiversity loss, large, serious marine reserves like this one are quietly becoming a blueprint others can follow.

Produce aisle at grocery store, for article on California plastic bag ban

California bans all plastic shopping bags at grocery stores

California’s plastic bag ban gets real on January 1, 2026, when even the thicker “reusable” plastic bags that quietly replaced the originals will disappear from grocery stores, pharmacies, and convenience stores statewide. Senator Catherine Blakespear, who authored the bill, put it plainly: those bags were single-use in everything but name. Shoppers will reach for paper or bring their own, and families using CalFresh and similar food assistance won’t pay the paper bag fee. California’s market is huge enough that what happens at its checkout counters tends to ripple outward, nudging manufacturers and other states to rethink their own rules. It’s a small, tangible reminder that closing loopholes — not just passing laws — is where real progress lives.

The beach with vegetation in foreground, for article on legal rights for ocean waves

In a first, the Brazilian city of Linhares grants legal rights to waves

Legal rights for ocean waves are now real: in August 2024, the Brazilian city of Linhares became the first government anywhere to extend legal personhood to part of the ocean, recognizing the waves at the mouth of the Doce River as rights-bearing. The waves had been smothered for seven years by mining sludge from a 2015 dam collapse, until a 2022 flood unexpectedly washed the river mouth clean. Rather than wait for the next disaster, the community wrote protection into law, requiring the city to actively defend the river’s flow and the waters it feeds. It’s a small, precise win with big implications — a hint of how coastal communities everywhere might begin defending the ecosystems they love on the ecosystems’ own terms.

Aerial view of a turquoise French Polynesian atoll for an article about French Polynesia marine protected area, for article on debt-for-nature swap, for article on coral reef protection

$35 million debt-for-nature deal aims to protect Indonesia’s coral reefs

A $35 million debt-for-nature swap between the U.S. and Indonesia will channel money that would have gone toward sovereign debt payments into coral reef protection over the next nine years. It’s the first agreement of its kind focused specifically on coral, and it targets nearly two million acres of reef across the Coral Triangle — the most biodiverse marine region on Earth, holding close to two-thirds of all known coral species. Indonesian nonprofits and local communities will guide the work, with a grant committee including civil society voices. As warming oceans threaten reefs worldwide, deals like this offer a model for tying debt relief to the ecosystems millions of people depend on.

Ocean water, for article on law of the sea treaty, for article on ITLOS climate ruling

Island states win historic climate case in world oceans court

Nine small island nations just won a landmark climate ruling from the world’s top ocean court, with judges declaring for the first time that greenhouse gases absorbed by the sea legally count as marine pollution. The coalition — including Tuvalu, Antigua and Barbuda, Vanuatu, and Palau — argued that countries have binding obligations under the Law of the Sea to limit warming to 1.5°C, and the tribunal agreed. Though the opinion is advisory, it’s already shaping two pending climate cases at the Inter-American Court of Human Rights and the International Court of Justice. For nations whose very existence is threatened by rising seas, it’s a reminder that patient diplomacy and international law can still give the smallest voices real weight in the global climate fight.

Beach at sunset, for article on ocean plastic cleanup

China announces 3-year plan to combat ocean litter and clean up coastal areas

Ocean plastic cleanup just got a major boost: China is targeting 65 bay areas along its 18,000-kilometer coastline in a coordinated three-year campaign, with four ministries working together to set up permanent cleanup systems by 2027. What makes this different from past efforts is the focus on stopping waste before it reaches the sea — local governments will build full chains to monitor, intercept, and process garbage flowing through rivers and storm drains inland. Coastal cities like Xiamen and Shenzhen have shown daily cleanup operations can work; now that model is going national. With more than 171 trillion plastic pieces estimated to be floating in the world’s oceans, decisive action from a country this large sends a powerful signal as global plastics treaty talks continue.