The Hong Kong startup combines 3D-printed reef tiles, biodiversity monitoring and long-term data to help companies manage their impact on marine ecosystems.
Updated
August 7, 2026 4:10 AM
Young corals growing on Archireef's 3D-printed terracotta reef tiles beneath the sea. IMAGE: ARCHIREFF
Anyone who has snorkeled over a coral reef has probably admired its vibrant colours and the marine life swimming between its branches. What is less visible is how easily these ecosystems can be damaged. Rising ocean temperatures and pollution continue to put reefs under pressure, while coastal development creates another threat. Construction can stir up sediment that settles on corals, blocking the sunlight they need and making it harder for damaged reefs to recover.
Protecting marine ecosystems is becoming a shared responsibility. Alongside scientists, governments and conservation groups, businesses whose operations affect the ocean are increasingly expected to understand, manage and reduce their environmental impact. They must also show regulators, banks and investors that they are meeting their environmental commitments.
Archireef helps businesses meet those demands. Founded by Vriko Yu, the Hong Kong-rooted B2B startup specializes in marine ecosystem restoration and ocean nature risk management. Drawing on years of research at the University of Hong Kong, Yu built the company to help organisations understand, measure and reduce their impact on marine ecosystems.
Yu describes Archireef as an “end-to-end ocean nature risk management company”.
“What we offer them is a credible way to meet those obligations and stand behind the results,” she says.
One of the company’s main tools for restoring damaged marine ecosystems is its flagship 3D-printed terracotta reef tile. The tiles provide a stable foundation where young corals can attach, grow and survive over time.
Archireef chose terracotta instead of concrete and other conventional materials because it is pH-neutral and does not release harmful chemicals into the water. Its surface also gives corals a suitable place to attach naturally.
Before placing a single tile in the ocean, the team studies the proposed restoration site to determine whether recovery is possible. It assesses the water quality, biodiversity and general health of the ecosystem. As Yu explains, restoration should begin only where nature has a realistic chance to recover.
“Restoration isn’t about replacing nature or engineering a reef into existence. It is about removing the barriers and giving a degraded system the conditions it needs to begin recovering on its own”, she says.
Once the team selects a site, divers carefully place the tiles on the seabed. Their curves, ridges and crevices imitate the structure of a natural coral reef, creating sheltered spaces for marine species. The design also helps limit sediment build-up, which can block sunlight and smother young corals.
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Archireef adjusts the shape of its reef tiles for each project.
“There’s no universal reef, so there’s no universal tile”, Yu says.
Instead of producing one standard model, the company adapts each design to the coral species, water conditions and surrounding marine environment. A coral restoration project in Hong Kong may therefore require a different tile from one in Saudi Arabia, even when the same manufacturing process is used.
“The biggest adaptation from site to site is usually the match between design, species and environment, not the manufacturing itself ”, Yu explains.
Although the reef tile is Archireef’s most recognizable innovation, Yu sees it as one part of a much broader service.
“The reef tile gets the attention because it’s tangible,” she says. “But the real product is the proof — defensible, audit-ready evidence of nature recovery that an organization can put in a disclosure and stand behind under scrutiny”.
Producing that evidence requires years of biodiversity monitoring. Long after the reef tiles have been installed, Archireef continues to track coral survival and the health of the surrounding marine ecosystem. Its monitoring methods include ecological surveys, AI-assisted species recognition, photogrammetry and environmental DNA testing.
Photogrammetry uses photographs to produce detailed 3D models of the reef. These models allow the team to measure changes in coral growth and reef structure over time.
Environmental DNA, commonly known as eDNA, offers another way to monitor marine biodiversity. Traditional ecological surveys often depend on divers recording the species they can see. eDNA testing instead examines traces of genetic material left in the water by marine organisms, including skin cells, mucus and waste.
By analyzing these traces, Archireef can detect species that may be hidden, difficult to identify or absent during a dive. This gives the company a more complete picture of the ecosystem and how it is changing.
For Archireef, the success of a coral reef restoration project is determined by what happens several years after installation.
“The indicators that matter aren’t the ones that look good on deployment day”, Yu says. “They’re the ones that show, two, three and five years on, whether a genuine ecosystem is establishing and sustaining itself”.
At the company’s first restoration site in Hoi Ha Wan, Hong Kong, around 90% of the transplanted corals remained alive four years after deployment. The long-term survival rate suggests that the ecosystem is recovering rather than simply appearing healthy during the early stages of the project.
Results like these have helped Archireef move beyond academic research and secure collaborations across the public and private sectors. In Hong Kong, the company has worked with government departments and public organisations responsible for coastal infrastructure and marine conservation.
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Skip the slogans—real Women’s Day campaigns create impact that lasts
Updated
April 1, 2026 8:56 AM
Mother Armenia monument in Victory Park, Gyumri city, Armenia. PHOTO: ADOBE STOCK
Women’s Day offers brands an opportunity to show what they stand for through meaningful action. But the strongest International Women’s Day campaigns do more than say “thank you”. They speak to women’s everyday lives.
Instead of big, vague empowerment slogans, some brands focus on small moments that shape confidence and wellbeing. Think about how we compliment young girls, how safe public spaces feel, what comfort really looks like and how friendship plays help women grow. When a campaign is built on a real insight and backed by something practical, it lands harder and lasts longer.
If you’re a startup planning a Women’s Day initiative, there’s value in studying what actually works. The examples below show how clarity, credibility and usefulness can turn International Women’s Day into something that feels meaningful and on-brand.
To celebrate the International Day of the Girl on October 11, 2025, Dove launched #ChangeTheCompliment—a campaign that asked parents and caregivers to rethink how they praise girls. Instead of defaulting to looks-based comments, Dove encouraged adults to acknowledge qualities like resilience, intelligence and determination alongside beauty.
The idea was grounded in data from Dove’s 2024 Real State of Beauty report, which found that more than 60% of girls feel pressure to be beautiful. Dove brought the message to life through a digital film showing parents broadening their praise in everyday moments.
In Canada, the campaign expanded through a partnership with psychologist Dr. Vanessa Lapointe, who helped anchor #ChangeTheCompliment in expert insight. She linked the campaign’s core message to Dove’s long-running Self-Esteem Project, launched in 2004 to provide free, evidence-based tools developed with psychologists and body image experts. Some of these tools included “Confident Me”, a classroom workshop on body confidence and “Amazing Me”, age-appropriate lessons designed to support self-esteem at school.
What worked here is that it didn’t stay inside a brand video. Parents, teachers and creators joined in by sharing their own examples online, posting revised compliments, building quick classroom activities or filming short clips where they swapped appearance-based praise for character-based words. From social posts to simple at-home conversations, the idea travelled beyond the original film and made participation easy.
Startup takeaway: Don’t build a Women’s Day campaign around a fuzzy theme. Focus on specific, everyday behaviors your audience relates to and design your campaign to shift them. Specificity makes your message practical and memorable.
In March 2024, Tetley Green Tea Immune launched the “I Am More Than My Nickname” campaign in India to challenge a common social habit: labeling someone’s fitness based on how their body looks. In many communities, body-type nicknames are used casually. Some of them might sound harmless, but they can chip away at confidence and self-worth over time. Tetley’s point was simple: fitness isn’t a body size. It’s strength, health and well-being.
The campaign centered on a digital film featuring a young girl nicknamed “Golu”, a Hindi term often used to describe someone as chubby. Throughout the film, she’s judged before she even tries, with people deciding what she can and cannot do based on her appearance. As the story unfolds, she pushes back. The film closes with women of different body types holding placards displaying various nicknames, ending with a clear line: “My Body Can, Your Body Can, Every Body Can”. It’s a strong example of a brand taking a familiar social habit and giving people a new way to see it.
Startup takeaway: Look for one small, common behaviour your audience sees every day. Then give people a simple way to engage with it, whether that’s sharing a story, rethinking a phrase or calling out a habit. When participation is baked into the idea, the campaign spreads naturally.
For International Anti-Street Harassment Week 2025, L'Oréal Paris launched its “Never Your Fault” campaign as part of its Stand Up Against Street Harassment program. The campaign drew on L’Oréal Paris research with Ipsos showing the scale of the problem: 75% of women reported experiencing harassment, and 60% said they adjust their clothing or appearance in public.
The message was clear: harassment is never the victim’s fault, and public spaces should feel safer for women. That matters because a lot of women still end up internalizing blame and changing how they dress just to lower the risk.
The campaign also came with a clear next step. It builds on L’Oréal’s partnership with Right To Be, an international NGO focused on stopping harassment, which began in 2020. Through Right To Be’s 5D framework—Distract, Delegate, Document, Delay and Direct—the program teaches bystanders simple, practical ways to intervene safely in the moment.
Startup takeaway: If you’re addressing a sensitive issue in a Women’s Day campaign, don’t go about it alone. Work with experts who bring trust, depth and real tools. It makes your message stronger fast.
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In 2025, Van Heusen Innerwear marked Women’s Day with a single visual that many women immediately recognized. The poster showed a crumpled shirt with a bra placed over it, capturing that end-of-day moment of relief.
The slogan on the poster—“Happy Women’s Day has nothing to do with us”—makes the point that real comfort is personal, not performative. The message wasn’t really about taking off a bra, but about the pressure women carry all day, including the expectation to look a certain way, feel a certain way and still keep going. By leaning into a real, everyday experience, Van Heusen positioned itself as a brand that listens rather than lectures.
Startup takeaway: Skip the predictable in Women’s Day slogans. Find an honest, lived moment and build around it. When your campaign reflects real life, it feels relevant instead of seasonal.
In 2025, Mattel celebrated International Women’s Day by honoring real-life female friendship duos with one-of-a-kind Barbie Role Model dolls made in their likeness. The campaign focused on the idea that strong friendships help women grow, succeed and support each other. Instead of spotlighting individual achievement, it highlighted collective strength—women empowering women.
By featuring duos such as Alicia Keys and Ann Mincieli, Jordan Chiles and Jade Carey and other global pairs across sports, entertainment and advocacy, the campaign framed friendship as a source of confidence and ambition from girlhood onward. To make it practical, Mattel partnered with psychologist and best-selling author Dr. Marisa G. Franco, who shared simple advice for girls: take initiative in making friends, assume people will like you, express appreciation openly, try new activities together and prioritize quality over quantity in relationships.
Startup takeaway: If your Women’s Day campaign is built on a social insight, make it actionable. Storytelling helps, but tools, education and frameworks are what make it useful.
Across these International Women’s Day campaigns, the playbook is consistent: choose one real, everyday behaviour and shift it. Whether it’s the way we compliment girls, the labels we use, how bystanders intervene, what comfort feels like or how we nurture friendships, each brand anchored its message in something tangible and built action around it.
For startups, the lesson is straightforward: be precise in what you’re addressing, be credible in how you show up and make your message usable. Attention is easy to grab, but relevance is harder to earn and far more valuable.