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.

Chevron gas station located near a Louisiana wetlands restoration project site along the coast, for article on Louisiana wetlands restoration

Chevron ordered to pay $740 million to restore Louisiana coast in landmark trial

Louisiana wetlands just got a powerful new defender: a jury ordered Chevron to pay $744.6 million to restore marshland in Plaquemines Parish, with interest pushing the total past $1.1 billion. Jurors found that Texaco, which Chevron acquired in 2001, had spent decades dredging canals and dumping wastewater into the marsh without meaningful cleanup. The ruling matters far beyond one rural parish — it’s the first of dozens of similar cases to reach trial, and the communities on this vanishing coast are disproportionately Black, Indigenous, and low-income. As courts from Europe to the Americas increasingly hold polluters accountable, this verdict signals that coastal destruction is no longer just a political fight. It’s a legal one.

School of fish, for article on Marshall Islands marine sanctuary

Marshall Islands protects ‘pristine’ Pacific corals with first marine sanctuary

The Marshall Islands just established its first federal marine protected area, shielding 48,000 square kilometers of ocean around the remote Bikar and Bokak atolls. A five-year National Geographic Pristine Seas expedition found these waters hold the highest reef fish biomass anywhere in the Pacific, along with corals showing rare resilience to warming seas. The new sanctuary formalizes generations of stewardship by the Utrik community, whose traditional knowledge anchors the country’s Reimaanlok conservation framework — a Marshallese word meaning “look toward the future.” For a low-lying nation whose survival depends on a healthy ocean, this is both a homegrown victory and a meaningful step toward the global goal of protecting 30% of the world’s oceans by 2030.

Landfill. A lot of plastic garbage. Environmental problems., for article on plastic waste ban, for article on plastic bag bans

Thailand bans imports of plastic waste to curb toxic pollution

Thailand’s plastic waste ban took effect in January 2025, closing the door on a trade that brought more than 1.1 million tonnes of foreign plastic scrap into the country between 2018 and 2021. Much of that waste was never recycled — factories often burned it instead, sending toxic fumes into nearby communities and contributing to risks of stroke, heart attack, and dementia. The ban is the hard-won result of years of organizing by Thai activists who documented the harm and refused to let it continue. With global treaty talks still stalled by oil-producing nations, Thailand’s move offers a hopeful blueprint: when communities push and governments listen, the tide on plastic pollution can begin to turn.

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.