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Off South Africa’s west coast in December 2025, observers documented 299 humpback whales gathered in a single feeding “supergroup.” Once hunted to fewer than 10,000 in the Southern Hemisphere, humpbacks now number more than 100,000 — a landmark conservation comeback.
NOAA’s GAIA initiative (Geospatial Artificial Intelligence for Animals) pairs very-high-resolution satellite imagery with machine learning to detect endangered whales — notably North Atlantic right whales and Cook Inlet belugas — across vast, hard-to-survey oceans, in partnership with the USGS, Microsoft AI for Good and others.
The 2025–2026 calving season brought 23 North Atlantic right whale calves — the most since 2009 for a critically endangered species numbering only about 380. Eighteen of the mothers had calved within the past six years, and three were first-time moms.
On June 18, 2026, the nonprofit SeaTrees launched “Coral Biodiversity Blocks” to fund reef restoration on Costa Rica’s Osa Peninsula, aiming to plant 4,000 corals across two reef systems by 2029 and lift local marine biodiversity by an average of 34%.
On June 9, 2026, French Polynesia announced the highest level of protection for 520,000 square kilometers of ocean — an area roughly the size of France — around the Austral and Marquesas Islands, banning mining, trawling and industrial fishing to safeguard one of the planet’s most pristine seascapes.
On July 8, 2026, the Ocean Conservation Trust and Cornwall Wildlife Trust launched “Mor Nature,” an £1.8 million programme to restore 10 hectares of seagrass meadow in Falmouth Bay and rebuild native oyster reefs — the largest seagrass restoration ever attempted in the United Kingdom.
In October 2025, the IUCN reclassified the green sea turtle from Endangered to Least Concern on its Red List, citing a global population rise of roughly 28% since the 1970s. Conservationists call it proof that decades of coordinated protection can bring a species back from the brink.
The global Ocean Census initiative identified 1,121 new marine species between mid-2025 and mid-2026, a 54% jump over the year before, from glowing worms and cave shrimp to a red-eyed dwarfgoby.
Florida’s 2025 sea turtle nesting season was one for the books, with loggerheads topping 100,000 nests statewide, green turtles posting their second-highest total ever, and leatherbacks setting a new statewide record of 2,012 nests. The numbers reflect decades of beach protection paying off.
Researchers matching decades of photographs have documented the longest journey ever recorded for an individual humpback whale: at least 15,100 kilometres between breeding grounds off Brazil and Australia. Reported in May 2026, the rare ocean-crossing is a hopeful sign of healthy, recovering whale populations.
NOAA Fisheries reported that 23 North Atlantic right whale calves were born during the 2026 calving season, the highest number since 2009 and a welcome sign for one of the world’s most endangered large whales.
Scientists at the Australian Institute of Marine Science deployed nearly 500,000 baby corals onto the northern Great Barrier Reef, reared from eggs and sperm collected during the annual mass spawning. The project unites researchers with Indigenous rangers, tourism operators and fishers in a community-scale restoration effort.
In May 2026, Papua New Guinea announced the Western Manus Marine Protected Area, a roughly 200,000-square-kilometer no-take sanctuary in the Bismarck Sea. The reserve safeguards reef sharks, manta rays, dolphins, whales, and sea turtles in one of the most biodiverse stretches of ocean on Earth.
A ten-year satellite study of more than 70 whale sharks across Indonesian seas has revealed hidden migration routes and even a nursery — and is now helping establish a new marine protected area in Saleh Bay to safeguard the world’s largest fish.
Ghana has designated its first marine protected area, the 703-square-kilometre Greater Cape Three Points reserve, safeguarding breeding grounds for sardinella, anchovy and mackerel. The reserve protects the livelihoods of 21 coastal communities in a nation where 60% of people rely on the ocean for food and income.
On May 4, 2026, Ocean Winds delivered first power from the Éoliennes Flottantes du Golfe du Lion off Port-La Nouvelle — the world's first nature-inclusive floating wind farm. Its three 10 MW turbines carry artificial reef habitats designed to boost marine biodiversity, powering about 50,000 people.
NOAA Fisheries confirmed that 23 North Atlantic right whale calves were born during the 2026 calving season — the highest number since 2009. Twenty of the 23 mothers were returning moms, and many calved on shorter, healthier intervals, offering hope for one of the planet's most endangered whales.
The 2025–2026 North Atlantic right whale calving season produced 23 mother-calf pairs, the highest count in 17 years. With only about 380 of these whales left, researchers say the strong season and shorter intervals between births are hopeful signs that the population’s reproductive health is improving.
University of Alberta chemist Steve Bergens developed an electrolyzer that splits seawater into hydrogen using a low-cost conductive adhesive, licensed by Cipher Neutron, that improves durability and cuts the electricity needed.
After half a century of global protection, the green sea turtle (Chelonia mydas) has been moved on the IUCN Red List from Endangered to Least Concern, with the global population up about 28% since the 1970s.
The High Seas Treaty (BBNJ Agreement) entered into force on January 17, 2026 after Morocco's ratification last September pushed it past the 60-country threshold. By April 2026, 145 countries have signed and 88 have ratified.
The four-member Artemis II crew safely splashed down in the Pacific Ocean on April 10, becoming the first humans to travel toward the Moon in over 50 years.
The IUCN announced that 10.01% of the global ocean is now designated within protected areas, with approximately 5 million square kilometers added in just two years — an area larger than the European Union.
NOAA Fisheries built GAIA, a cloud-based system that pairs very high-resolution satellite imagery with machine learning to detect endangered whales such as North Atlantic right whales and Cook Inlet belugas, with an open-source annotation tool from Microsoft AI for Good.
At COP15 in Brazil, over 130 governments agreed on expanded protections for threatened migratory species, including blue corridors for sea turtles and flyways for birds.
Despite rising emissions, 2025 delivered tangible environmental victories: renewable energy capacity surged to record levels, endangered green sea turtles hit milestone recovery numbers, and tiger populations grew across Asia, reports the BBC.
The Australian Institute of Marine Science reports that coral cover in the Great Barrier Reef's northern third has reached 39%, the highest in 12 years, driven by successful water quality programs and favorable ocean conditions.
In April 2026, UNEP-WCMC and IUCN announced that 10.01% of the global ocean is now within protected and conserved areas, up from 8.6% in 2024. About 5 million square kilometres — an area larger than the European Union — were protected over the past two years, marking real progress toward the 30x30 goal.
The Ocean Cleanup announced in March 2026 that it had captured 50 million kilograms of trash worldwide, combining ocean systems with river Interceptors to stop plastic at its source on the way to its 2040 goal.
The High Seas Treaty entered into force in January 2026 after Morocco became the 60th country to ratify it in September 2025. The landmark agreement establishes the first legal framework to protect marine biodiversity in international waters, covering nearly two-thirds of the world's oceans that were previously ungoverned.
Several humpback whale populations have recovered to near pre-commercial whaling numbers, with some groups removed from endangered lists, marking one of the greatest conservation comebacks in wildlife history.
A University of St Andrews study published in February 2026 finds that as humpback whale populations rebound from whaling, older, more experienced males increasingly father the calves. Drawing on nearly 20 years of data from New Caledonia, the research is a striking measure of a great recovery in progress.
In March 2026, the nonprofit The Ocean Cleanup announced it had captured 50 million kilograms of trash through its global operations, combining its ocean array in the Great Pacific Garbage Patch with a fleet of river Interceptors. The figure marks rapid acceleration from 10 million kilograms reached only two years earlier.
An international research cruise has catalogued over 120 previously unknown deep-sea organisms that produce their own light, reshaping our understanding of ocean ecosystems.
The Ocean Cleanup and partner organizations announce they have removed 100,000 tonnes of plastic from the world's oceans, halfway to their 2030 target.
In a feat once thought improbable, the green sea turtle has been removed from the endangered species list in 2025, marking one of the greatest conservation success stories of our time. Decades of beach protection, fishing regulation changes, and international cooperation have brought the species back from the brink.
The Global Ocean Treaty became reality in 2025 after 79 nations ratified the agreement, far exceeding the 60 required. The treaty protects marine biodiversity in international waters covering nearly half the planet.
Verified report based on cited source.
The Global Ocean Treaty became law in September 2025 after 79 nations ratified it — far exceeding the 60 required. The treaty gives governments a legal framework to protect international waters, where currently only 1% is protected.
The largest seagrass restoration project in history is creating vast underwater meadows that capture carbon 35 times faster than tropical rainforests.
A trailblazing attempt to repopulate the ocean with sharks born from surplus aquarium eggs is expanding marine conservation.
The Great Barrier Reef has experienced its largest coral spawning event in decades, a sign that conservation efforts are helping the ecosystem recover.
A landmark global treaty to protect the high seas has entered into force after 79 nations ratified the agreement, potentially creating the largest network of ocean sanctuaries in history.
Marine biologists have developed heat-resistant coral varieties that can survive in waters up to 3°C warmer, offering hope for reef conservation as oceans warm.
Four million native oysters are being returned to an artificial reef off Norfolk, England, creating what will become Europe's largest oyster reef and potentially transforming local marine ecosystems.
The PacWave South test site off Oregon is set to host its first grid-connected wave energy converters in summer 2026, backed by the first U.S. mainland wave-power purchase agreement, a milestone for tapping the ocean's vast energy.
Scientists recorded the highest number of North Atlantic right whale sightings ever for January, a hopeful sign for the critically endangered species with only 384 individuals remaining.
In a landmark conservation victory, the green sea turtle was officially removed from the endangered species list in 2025. Decades of beach protection, anti-poaching measures, and international cooperation brought the species back from the brink.
A pioneering assisted fertilization technique is helping restore disappearing coral reefs in the Dominican Republic, with the approach gaining momentum across the Caribbean.
The Tainui Atea marine protected area now covers 1.1 million square kilometers of ocean, making it the largest MPA on Earth and a major win for ocean biodiversity.
Project CETI researchers used custom AI models to analyze sperm whale codas, identifying vowel-like patterns described as one of the closest parallels to human phonology found in animal communication.
Countries at the CITES wildlife-trade convention voted by consensus to grant all ten species of manta and devil rays Appendix I status — the strongest protection available — effectively banning international commercial trade in these ocean giants, whose numbers have plunged 80–99% in many regions.
French Polynesia has created the world's largest marine protected area, adding to a wave of new wildlife sanctuaries established across the globe in 2025.
The IUCN officially reclassified the green sea turtle from Endangered to Least Concern, marking one of the greatest conservation success stories of our time.
A landmark deal to protect the high seas has become a reality, with 79 nations ratifying the Global Ocean Treaty — far beyond the 60 required — potentially creating the largest network of ocean sanctuaries in history.
Researchers from the University of Amsterdam and London Business School built an AI route-optimization algorithm for The Ocean Cleanup that boosts plastic collection efficiency by about 60 percent without raising operating costs, already in use for Pacific operations.
Scientists aboard the research vessel Falkor (too) captured the first confirmed footage of a living colossal squid in its natural habitat — a translucent juvenile gliding 600 meters down near the South Sandwich Islands, exactly a century after the species was named.
A review of about 300 sea turtle population records found that significant increases were three to six times more common than significant declines, with four of five green turtle regional populations growing. Loggerhead nests in Cape Verde jumped from roughly 500 in 2008 to 35,000 by 2020 — a global conservation success story.
Google Research, Google DeepMind and university marine biologists built SurfPerch, an AI trained on crowd-labeled reef recordings that rapidly analyzes underwater sound to gauge reef health, distinguishing protected from unprotected reefs and tracking restoration.
