JAMSTEC's D-ARK project filmed the first bioluminescence ever recorded inside a deep-sea cave: a glowing new zoanthid, Corallizoanthus aureus, at 385 meters off Okinawa's Daito Islands. A look at the strange ecosystem hiding in unexplored submarine karst.
A University of Tokyo-led team has produced the first high-precision genome of the Greenland shark, the longest-lived vertebrate. Changes in a linker histone and the ferritin gene offer the first real clues to its ~400-year lifespan—and to human aging.
A Japanese research team — University of Tokyo, JAMSTEC, and the National Institute of Polar Research — has produced the first direct observational evidence that warm-water microbes carried into the Arctic Ocean are altering its nitrogen and phosphorus cycles. Aboard the R/V Mirai between 2015 and 2020, they tracked how UCYN-A2, a nitrogen-fixing organism normally associated with subtropical seas, surged into the Arctic basin during the early ice-melt year of 2017 — and why that matters for the world's most rapidly warming ocean.
Japan's Coast Guard has released free Minecraft world data recreating Japan's surrounding seafloor — including the 10,920m Challenger Deep in the Mariana Trench. Released for Marine Safety Day on May 12, 2026, the world is available for both Java and Bedrock editions.
At Inazumi Underwater Cave in Oita Prefecture, professional diver Yuji Ohama (60) and his team reached 97.4m depth on March 20, 2026—likely a Japanese national record for underwater limestone caves. Formed 300 million years ago and submerged by an Aso volcanic eruption 85,000 years ago, the cave's deepest section revealed primordial stalactites and geological strata never seen above ground. We compare this discovery with Mexico's cenotes and Florida's cave systems, and explore Japan's only commercially diveable underwater limestone cave.
When did crabs start walking sideways? A Japan-US-Taiwan team led by Nagasaki University filmed 50 species and mapped them onto a phylogenetic tree, finding that sideways walking evolved just once around 200 million years ago, published in eLife.
Japan pulled rare earth mud from 6,000m down in February 2026, but the 'Rare Metal King' Shigeo Nakamura says don't commercialize it. His counterintuitive argument: Minami-Torishima's 16 million tons is worth more as a silent deterrent co-held with the US than as a commercial mine. We unpack Nakamura's career, his 'don't mine, but keep the capacity' thesis, and how it compares to the US SPR, Project Vault, and Chinese stockpile strategy.
Japan plans to transfer operation of its next Antarctic icebreaker from the Maritime Self-Defense Force to research agency JAMSTEC after the current Shirase retires around 2034. A look at Japan's 70-year Antarctic legacy and what the shift means.
China's carrier Liaoning conducted flight operations near Minamitorishima — Japan's remote rare earth island. With Beijing tightening export controls in retaliation for PM Takaichi's Taiwan remarks, and a US-Japan rare earth partnership signed at the March 2026 summit, this is no longer just about minerals. It's a geopolitical power game with South China Sea parallels.
Japan Research Institute proposes an Ocean Industrial Complex combining deep-sea robotics, rare earth mining, and blue carbon. With a successful trial extraction of rare earth mud from 6,000m depth and breakthrough underwater wireless tech, Japan's ocean strategy is becoming reality.
In March 2026, Japan and the US signed an MOC on deep-sea mineral development. But overseas coverage missed the real story: Japan's successful 6,000m rare-earth mud retrieval, China's dual-use export ban, and 14 years of research that made this moment possible.
JAMSTEC research reveals microplastic density near Japan is 27 times the global average. An estimated 28,000 tons sink to the deep sea annually, and fishing-related plastic accounts for half of all coastal debris. Plus: the world's first ocean plastic center opening June 2026.
Japan's shipping giant MOL and tech conglomerate Hitachi have agreed to jointly develop floating data centers by converting used ships. Using seawater cooling to slash power costs, needing no land, and deployable in just one year, these maritime server farms offer a creative answer to the AI era's insatiable appetite for computing power.
NTT has developed multi-core optical fiber technology that quadruples submarine cable capacity without changing cable structure. Achieving 192 cores (48 fibers × 4 cores) with deployment targeted for 2029, this Japanese innovation addresses the explosive data demands of the AI era. We explore the technology alongside Big Tech's submarine cable investment race.
ONE PIECE manga has surpassed 600 million copies worldwide! Creator Eiichiro Oda has written down the secret of the One Piece treasure for the very first time and, with help from Japan's JAMSTEC ocean research agency, sealed it 651 meters beneath the sea. The answer will only be revealed when the manga ends. Here's everything you need to know about this extraordinary event.
Japan Coast Guard's new 3,500-ton patrol ship "Suruga" launched on Feb 18, 2026. Built at $108M with twin 40mm guns and 25+ knot speed, this 8th Miyako-class vessel strengthens Japan's response to China's growing maritime assertiveness around the Senkaku Islands.
The Chinese vessel seized in Japan's EEZ used a "tiger net" — a devastating method with 1cm mesh that strips the ocean bare, including juvenile fish. Explore how this "sea vacuum cleaner" works and why IUU fishing by Chinese fleets threatens oceans from South America to Africa.
A Nagasaki University study reveals nanoplastics transferred through the food chain drastically reduce red sea bream larvae survival rates. With microplastic concentrations 27 times the global average, Japan's coastal waters face an invisible pollution crisis threatening fisheries and marine ecosystems.
Japan's first nuclear-powered ship "Mutsu," launched in 1969, was plagued by a radiation leak incident and fierce public opposition. Yet engineers cut the hull apart, removed the reactor, and spent roughly $1.3 billion (in today's value) transforming it into "Mirai" — one of the world's largest ocean research vessels. Over 28 years, Mirai sailed 2.3 million km (58 trips around Earth), pioneered Arctic research, and even surveyed Fukushima's nuclear contamination. Retired in December 2025, its story of dramatic reinvention now passes the torch to the icebreaking successor "Mirai II."
Japan achieved a world-first by extracting rare earth mud from 6,000m deep near Minamitorishima in January 2026. Explore the latest on Japan's seabed mineral resource development, commercialization roadmap, environmental challenges, and what it means for global critical mineral supply chains.