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Researchers in Maldives obtain first ever underwater ultrasound scans of wild reef manta rays
A team of international researchers working with Six Senses Laamu in Maldives has obtained the first ever underwater ultrasound scans of wild reef manta rays.
The team of researchers from the University of Cambridge and the Manta Trust worked together with the Maldives Underwater Initiative (MUI) at Six Senses Laamu resort in the unexplored Laamu atoll to successfully scan a pregnant wild reef manta ray underwater to obtain clear ultrasound images of her foetus, using the world’s first contactless underwater ultrasound scanner.
Two years ago, MUI brought together some of the great minds in veterinary technology and challenged them to create a device that could ultrasound scan Laamu atoll’s resident population of reef manta rays (Mobula alfredi).
“MUI aims to be a marine conservation visionary,” Marteyne van Well, the General Manager at Six Senses Laamu, was quoted in a statement issued by Six Senses, saying.
“One of the ways we’re leading conservation efforts in the Maldives is by providing a platform for discussions on, and the field testing of, this world-first technology.”
Following a visit to Six Senses Laamu, Vetsonic (UK) Ltd Founder Ray Rochester approached veterinary imaging leaders IMV Imaging with the idea of developing a scanner to meet the rigours of diving at Manta Point, a manta ray cleaning station just a 10-minute boat ride from the resort that researchers from the Manta Trust have been studying since 2014.
IMV Imaging’s Duo-Scan:Go Oceanic is the first ever technology to allow contactless scanning of wild marine animals at depths of up to 98.5 feet (30 metres), whilst also being portable (the dive rig weighs less than 4.5 pounds (2 kilograms). The aim of bringing this technology to Laamu was to scan wild pregnant reef manta rays in order to study gestation and embryonic development.
“We know very little about where these reef manta rays go to give birth and how long gestation lasts in the wild. This ultrasound technology could allow us to determine rates of reproduction in the wild and this information would help guide conservation strategies for this threatened species,” Nicole Pelletier, Manta Trust Project Manager at Six Senses Laamu, said.
The research project is taking place in Maldives, which has the largest population of reef manta rays in the world. The team hopes that their work will help establish the factors responsible for annual fluctuations in breeding and discover why animals breed in certain areas but not others.
Manta rays are close relatives of sharks and rays. The largest individuals can reach as many as seven meters in width and weigh up to two tonnes. However, despite their size, and compared to some of their close relatives, mantas are gentle creatures.
Mantas are found throughout the tropical and sub-tropical oceans of the world. The animals never stop moving, as they must keep water flowing over their gills to respire. Their daily and seasonal movements are tuned to the ebb and flow of the ocean currents that carry the planktonic food upon which they depend.
“Manta rays are one of the most beautiful and iconic creatures that swim in our oceans,” Dr Gareth Pearce, from the Department of Veterinary Medicine at the University of Cambridge, was quoted in a statement issued by Manta Trust, as saying.
“Unfortunately, like many animals, their future is threatened. They are increasingly fished, both deliberately and through bycatch and their populations are now at risk.”
In recent years, manta ray populations have become threatened through bycatch in fisheries targeting other species, such as tuna and swordfish, but also because their gill plates have recently become sought after for use in Asian medicine.
Working with the Manta Trust, Dr Pearce and PhD student Niv Froman use the new ‘Duo-Scan: Go Oceanic’ ultrasound scanner to study the reproductive ecology of manta rays. To scan the manta rays, researchers dive down to a ‘cleaning station’ where smaller fish remove parasites from the mantas’ skin. These stations are typically 20-30 metres down, often with poor visibility and potentially strong ocean currents.
The diver then approaches a manta from above to avoid disturbing the animal. He positions the scanner 4-5cm above the surface of the manta, targeting the left side of the dorsal fin, which is where the reproductive structures such as the ovaries and the uterus are visible.
“It’s important not to cause the manta ray any stress,” Froman explained.
“Using these portable scanners, we’re able to obtain ultrasound images of their internal structures, particularly their reproductive tracts, without disturbing the animal. This is the first time that this has been possible in free-swimming mantas.”
The scanner enabled the team to obtain the first-ever scans of wild reef manta rays, including pregnant and non-pregnant females, as well as mature males.
“Using the scans, we’re able to determine the stages of maturity and when animals are becoming reproductively active. We can observe the stages of pregnancy, the development of the foetus and importantly, whether an animal maintains that pregnancy and gives birth to a live animal,” Dr Pearce said.
“Ultimately, our work aims to inform the conservation of manta rays both in the Maldives and other areas of the world, enabling the populations to survive and hopefully flourish. Our hope is that this research project will contribute to conserving the species for future generations.”
Sightings of the animals in the Maldives are reliable and consistent, allowing the researchers to take images of the same animal multiple times throughout its gestational period, which lasts just over a year.
“When the project began, none of the team knew whether scanning wild reef manta rays would even be possible. What has been achieved is beyond what we could have hoped for,” Dr Guy Stevens, Co-Founder and Chief Executive of the Manta Trust, said.
“Manta rays are threatened worldwide and we still know so little about their reproductive strategies. The ability to scan pregnant individuals will be invaluable in our quest to protect them.”
According to IMV-imaging, the ‘Duo-Scan: Go Oceanic’ represents significant improvements on previous technologies. It can be taken to depths of up to 30 meters and —with the assistance of Wi-Fi and a smartphone as a viewing screen—it is small enough to fit in the palm of your hand.
“What we are really excited about is the contactless nature of this technology. There are significant benefits for animal welfare, but you also open up a whole range of possible applications if you can scan animals that ordinarily wouldn’t let you get close enough to touch them,” Alan Picken, Chief Executive of IMV-imaging, said.
The Cambridge researchers, in collaboration with a team from the Manta Trust, verified that the contactless technology works in the field tests carried out in collaboration with the Vetsonic (UK) Ltd and Six Senses Laamu.
To mark Earth Day, Sun Siyam Olhuveli, part of the Lifestyle Collection within the House of Siyam, launched its new marine conservation initiative, the Adopt A Coral Frame experience, during a morning event held on 22 April at Milano Beach on Dream Island.
The initiative forms part of the resort’s wider marine conservation efforts and is designed to give guests a direct way to engage with coral restoration while supporting the protection of the surrounding reef ecosystem.
During the launch, guests were introduced to the coral restoration process through a hands-on experience that explained how new coral growth can be supported through frame-based planting. Under the programme, guests are invited to select and adopt a coral frame, attach healthy coral fragments to it, and take part in placing it within the lagoon to help form a new reef structure.
The process begins with the collection of healthy coral fragments under the guidance of the resort’s marine biologist. These fragments are then secured to specially designed coral frames and placed in selected areas within the resort’s coral garden, where conditions are intended to support growth and marine biodiversity. Guests who adopt a frame will also receive updates on its progress, including photographs shared every six months.
The resort said the programme is intended to make coral conservation more accessible to guests while also highlighting the role of reefs in supporting marine life, protecting coastlines and maintaining ocean ecosystems.
Chaminda Upul, Group Sustainability Manager for Sun Siyam, said the initiative was designed to give guests an opportunity to contribute in a direct way.
“Earth Day is a reminder that even the smallest actions can shape something far greater,” he said. “With Adopt-A-Coral Frame, we wanted to create an experience where our guests can leave a positive mark on the ocean. It’s simple, it’s meaningful, and it stays with you.”
Hassan Adil, General Manager of Sun Siyam Olhuveli, said the resort wanted to create an experience that combines guest participation with long-term environmental value.
“At Olhuveli, we believe the best experiences are the ones that stay with you long after you leave. Adopt-A-Coral is our way of inviting guests to be part of something lasting, while caring for the natural beauty that makes this place so special,” he said.
Part of the proceeds from each coral adoption will go towards Sun Siyam Care, the group’s sustainability platform, supporting marine conservation and reef restoration efforts.
Through the launch of Adopt A Coral Frame, Sun Siyam Olhuveli is combining guest experience with reef restoration, reflecting a wider focus on environmental engagement within its island operations.
Atmosphere Core has released its latest sustainability report, the Core Impact Report 2025, outlining progress across its Maldives operations in areas including energy use, waste management, marine conservation and community engagement.
Published on Earth Day 2026, the report sets out the company’s efforts to integrate sustainability into day-to-day operations and longer-term planning, at a time when tourism businesses face increasing pressure to demonstrate measurable environmental and social performance.
According to the report, Atmosphere Core generated 7.9 million kilowatt-hours of solar power over the past year, with renewable energy accounting for 13 per cent of its total energy demand. The company also reported that waste-to-value systems, including the conversion of 140 tonnes of organic waste into biogas energy, contributed to savings of more than 2.1 million litres of diesel and helped avoid over 5,700 tonnes of carbon emissions.
The report also details progress in reducing single-use plastics across Atmosphere Core’s portfolio of nine resorts. To date, the company said it has eliminated more than 2.1 million plastic bottles and 1.48 million plastic straws. These measures are supported by a centralised sourcing model aimed at improving operational efficiency and reducing waste across the supply chain.
Marine conservation remains a central part of the company’s sustainability programme. According to the report, more than 16,600 coral fragments have been planted across 360 reef frames as part of restoration efforts intended to support reef regeneration around its resorts.
The report also highlights the work of the Atmosphere Foundation, the company’s non-profit corporate social responsibility arm, which is currently supporting 26 projects focused on education, livelihoods and community resilience. Among these is a bamboo-planting initiative that has established more than 3,700 plants across 45 locations in the Maldives.
Atmosphere Core said sustainability is embedded across the business rather than treated as a separate initiative, reflecting a broader shift in the hospitality sector towards operational accountability and measurable outcomes.
Commenting on the report, Salil Panigrahi, Co-Founder and Managing Director of Atmosphere Core, said: “At Atmosphere Core, sustainability is not a parallel initiative; it is fundamental to how we operate and grow. The Core Impact Report reflects our commitment to moving beyond reducing impact to creating lasting value for our communities and ecosystems.”
“As we look ahead, our focus remains on scaling these efforts in a meaningful way, ensuring that each of our resorts contributes to a more resilient and regenerative future,” he added.
Through the report, Atmosphere Core is positioning its sustainability strategy around data-led progress in environmental management and community engagement, while aligning its operations with wider industry expectations on climate and destination stewardship.
On Saturday, 25 April 2026, SO/ Maldives will stage its “Fight Fit” island activation as part of the resort’s ongoing 120 Days Fitness Challenge, bringing together fitness, wellness and local collaboration in a resort-wide programme.
Developed in partnership with Fight Soul Maldives, a local fitness collective focused on combat sports, the activation is designed to offer guests both participation and live viewing experiences while also bringing a local element into the resort’s wellness programming.
A key part of the activation is the Muay Thai Guest Workshop, where guests will have the opportunity to train with fighters from Fight Soul Maldives. Open to different fitness levels, the sessions will introduce the basics of Muay Thai through drills, technique-based training and group activity.
The programme will extend across the island through a series of activities including sunrise yoga, beach combat training, aqua yoga accompanied by DJ music, and sunset fight showcases. According to the resort, the aim is to combine physical activity with the island setting through a range of structured wellness experiences.
The activation will also include a healthy menu developed to support fitness and balanced living, in line with the resort’s wider wellness focus.
Guests will also be invited to take part in a skincare workshop and ritual linked to the launch of products from Comfort Zone. The experience will introduce skincare practices based on science and sustainability as part of the broader wellness programme.
In the evening, the programme will continue with foam parties, fire dance performances, and live Muay Thai and kickboxing exhibitions featuring athletes from Fight Soul Maldives.
Through “Fight Fit”, SO/ Maldives is presenting a wellness-led island activation that combines fitness, lifestyle programming and collaboration with local talent.
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