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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.
Grand Park Kodhipparu, Maldives marked World Manta Day with a series of activities aimed at raising awareness about the importance of manta ray conservation and the threats these marine species face from international trade, overfishing, plastic pollution and habitat destruction.
The resort organised painting workshops where guests were invited to illustrate their impressions of manta rays and their underwater environment, fostering a connection with marine life through art. Using shimmering glitters, participants recreated the elegance and grace of manta rays, while others crafted large-scale designs on the beach, turning the shoreline into a visual tribute to the creatures.
As part of its commitment to environmental education, the resort released a special video highlighting the feeding habits, defence strategies and reproductive behaviours of manta rays. The video serves as an educational resource, reinforcing the significance of marine conservation through scientific understanding and community engagement.
Citra Suriah, Marketing Director of Grand Park Kodhipparu, Maldives, said the resort would continue to provide opportunities for guests to learn about and advocate for collective responsibility in protecting the ocean.
The Ritz-Carlton Maldives, Fari Islands, is preparing to welcome guests to a week-long Autumn Festival with Halloween-themed celebrations running from 30 October to 5 November. The programme features a variety of activities designed for families, couples, and individual travellers, with events ranging from treasure hunts and creative workshops to wellness sessions and exclusive dining experiences.
The celebrations begin on 30 October with a beachside Tabata workout followed by a pumpkin carving workshop at La Locanda. Activities for children and teens include the Magic of Mantas virtual reality exploration, Haunted Brick Builders, and the Autumn Costume Fashion Show. Parents are invited to a cocktail gathering on the shore before the evening concludes with a Culinary Maestro dinner by Michelin-starred Chef Max Strohe, as part of the resort’s Masters of Crafts series.
On 31 October, guests may join a morning Dynamic Flow Yoga session in the Mystique Garden or take part in a turtle snorkelling excursion. Children between four and twelve are encouraged to join the Flying Fox Quest, a Halloween-themed nature walk, while older children embark on an Island Treasure Quest. Seasonal workshops such as wreath decoration and creative pumpkin carving are available, and the day concludes with a Trick or Treat Treasure Hunt across the island and a Halloween Feast at La Locanda.
As the week progresses, the festival highlights wellness and creativity. Under the Masters of Crafts programme, mobility coach Anthony Green will host sessions on posture, flexibility, and spinal health. Seasonal crafts for younger guests include galaxy-themed pumpkin art, Halloween decorations, wand-making, and mask workshops. Family activities extend to Autumn Carnival Stalls, Magic Hat bowling, and themed cooking sessions. Evening entertainment includes a magic show, a piñata party, and further culinary experiences led by Chef Max Strohe.
The festival concludes on 5 November with a Vinsaya Flow Yoga session in the Mystique Garden, an art class featuring batfish designs on tote bags, and a children’s treasure hunt. Families are invited to join the Boos and Brews Halloween Dhoni Cruise before the celebrations end with a Luxury Sunset Cruise.
Through this programme, The Ritz-Carlton Maldives, Fari Islands, combines seasonal festivities with wellness, creativity, and gastronomy, offering guests a diverse celebration of autumn and Halloween in the Maldives.
Soneva Fushi, situated within the Maldives’ Baa Atoll UNESCO Biosphere Reserve, has been named winner of the SeiBellissimi Art of Hospitality Award as part of The World’s 50 Best Hotels 2025. The accolade is one of two special awards announced ahead of the official ceremony on 30 October. The award is based on votes from more than 800 members of the Academy, who were asked to identify the hotel where they experienced their single-best hospitality moment within the two-year voting period.
The award recognises the quality of service that ensures guests feel cared for throughout their stay. It celebrates the work of a property and its entire team, acknowledging excellence in areas ranging from reception and housekeeping to amenities and food and beverage services. Voters were asked to consider ambience, unique experiential elements, and the warmth of the hospitality on offer.
Soneva Fushi, the original Soneva resort and regarded as the model for barefoot luxury, is located on one of the Maldives’ largest and least developed islands. The resort comprises 71 private villas, either set amidst dense jungle or positioned above the ocean. Guests are invited to embrace a slower pace of life, with experiences ranging from deserted island picnics and wellness treatments at Soneva Soul to curated events under the Soneva Stars calendar.
Emma Sleight, Head of Content for The World’s 50 Best Hotels, said: “This award celebrates the foundation of hospitality and honours the emotional connection that guests have with a hotel and its team. For three decades, Soneva Fushi has been delivering memorable service at the highest level that puts the guest at the heart of every interaction. A mainstay of The World’s 50 Best Hotels list since the awards’ inception, Soneva Fushi is a worthy winner of the SeiBellissimi Art of Hospitality Award, setting a benchmark of all-encompassing excellence one stay at a time.”
Each villa offers extensive indoor and outdoor living space, private pools and ocean views. A distinctive feature of the resort is its Barefoot Guardians – dedicated butlers assigned to each villa to provide personalised service. Available at all times, they arrange every aspect of the guest experience, from zipline adventures and snorkelling at Hanifaru Bay to stargazing at the observatory or dining in one of 14 restaurants. The Barefoot Guardians also manage the Soneva Stars calendar, which hosts international chefs, wellness specialists and sporting figures.
Antony Paton, General Manager of Soneva Fushi, said: “This award belongs to the entire team at Soneva Fushi. It is a reflection of our shared purpose to create moments of joy, connection and wonder every single day. Being recognised by The World’s 50 Best Hotels affirms that the quiet magic we strive for is not only felt by our guests, but remembered. And that, to us, is the greatest reward.”
Giancarlo Mancino, Chief Executive Officer of SeiBellissimi, added: “At Soneva Fushi, hospitality is a seamless extension of a lifestyle deeply rooted in sustainability, wellness and mindful luxury. Founded with a slow life philosophy, every experience here is a tribute to living in harmony with nature, honouring health-conscious principles, and crafting each moment with genuine care. This devotion to sustainable elegance and the art of well-being is the perfect mirror of SeiBellissimi’s own values: Italian craftsmanship, conviviality, and a respect for quality that goes beyond the ordinary.”
The World’s 50 Best Hotels 2025 ceremony will take place at Old Billingsgate in London on Thursday 30 October, where Soneva Fushi will formally receive the SeiBellissimi Art of Hospitality Award.
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