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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.
This February, Banyan Tree Vabbinfaru invites travellers to celebrate love through a series of intimate and thoughtfully curated Valentine’s experiences, set against the natural beauty of the Original Maldives, where romance, inner renewal and mindful presence unfold with ease.
From 10 to 14 February 2026, the resort presents a refined Valentine’s programme designed for couples seeking meaningful connection and timeless romance. Central to the celebration is destination dining on a private sandbank, where an exclusive Valentine’s dinner is served on a secluded stretch of white sand, surrounded by the Indian Ocean. Beneath the stars and by candlelight, couples are invited to savour a carefully curated menu in an atmosphere of quiet intimacy.
Romance is further elevated at Madi Hiyaa, the resort’s Japanese restaurant, with a specially crafted four-course Valentine’s menu. The experience begins with a rose-inspired sparkling welcome cocktail, setting an elegant tone for the evening. At Naiboli Bar, candlelit tables, subtle Valentine’s touches and live music create an unhurried evening by the sea, allowing guests to linger and connect.
On 14 February, couples may deepen their celebration at the award-winning Banyan Tree Spa through the Romantic Spa Retreat, a 120-minute experience designed for reconnection. Guests may choose between Sunrise Nourished or Sunset Relief, each combining a signature body healer, a full-body massage and a mini facial, complemented by light refreshments enjoyed in the privacy of the spa pavilion.
Throughout February, Banyan Tree Vabbinfaru also offers the “From Stress to Stillness” wellbeing journey, inviting guests to restore balance through a personalised consultation and a thoughtfully curated programme that includes Auricular Therapy, Counter Tech Move rituals and Yogic Sleep (Yoga Nidra). Rooted in understated elegance and a holistic philosophy of wellbeing, the month becomes an invitation to celebrate love while fostering calm, reflection and mindful presence.
Valentine’s celebrations extend to Dhawa Ihuru, where couples are invited to mark the occasion through relaxed moments by the sea. On 14 February 2026, guests are welcomed at Velavani Bar with a rose sparkling Valentine’s drink before continuing the evening at Riveli Restaurant, where a special Valentine’s sweet corner adds a romantic highlight to the dining experience. Throughout the month, guests may also unwind at 8lements Spa, where soothing treatments encourage relaxation, balance and quiet renewal, complementing the spirit of the season.
Excursions
Manta season experience returns as InterContinental Maldives Maamunagau announces 2026 retreat
InterContinental Maldives Maamunagau Resort has announced the dates for its 2026 Manta Retreat, following the programme’s strong reception in recent years. The retreat will take place from 24 to 27 March 2026, coinciding with the Maamunagau manta season, when juvenile manta rays are commonly sighted in the resort’s lagoon just offshore.
The resort will once again partner with The Manta Trust, one of the world’s leading manta ray research organisations, to co-host the retreat and offer guests an immersive, educational experience centred on marine conservation. The programme is designed for travellers seeking purpose-led experiences and a deeper understanding of manta rays within their natural environment.
Located on the edge of a UNESCO World Biosphere Reserve and adjacent to a known juvenile manta ray aggregation site, InterContinental Maldives Maamunagau provides direct access to key research and observation areas. During the retreat, guests will be able to participate in guided reef snorkelling, manta excursions led by The Manta Trust, coral restoration and planting workshops, and a series of educational sessions. Participants will also have the opportunity to adopt and name a manta ray as part of the conservation initiative.
The partnership between InterContinental Maldives and The Manta Trust has been in place since 2019. The retreat will be led by The Manta Trust’s base leader, Meral Hafeez, who will guide guests through manta ray encounters while sharing insight into the organisation’s ongoing research and conservation efforts in the surrounding waters. The programme offers participants a behind-the-scenes look at the daily work of the research team, including observing and recording manta ray behaviour.
In 2023, Maamunagau Lagoon was recognised as an Important Shark and Ray Area (ISRA), identifying it as a vital habitat for manta rays and a priority conservation site. The lagoon continues to serve as a key research area for The Manta Trust, allowing guests to observe manta rays in their natural environment within close proximity to the resort. Certified divers are also catered for, with access to dedicated dive sites where manta ray cleaning stations can be observed, highlighting the complex marine ecosystems of the Maldives.
Beyond the retreat activities, guests can enjoy the resort’s overwater villas, unwind at AVI Spa, or explore its range of dining experiences.
The participation fee for the Manta Retreat is USD 1,550++ per night, per room, based on double occupancy, with a minimum stay of four nights. The package includes one manta ray research trip, guided house reef snorkelling, manta ray adoption, educational workshops, and accommodation in a luxury villa or residence on a half-board basis.
Coco Palm Dhuni Kolhu, part of the boutique island resort collective Coco Collection, is marking ten years of partnership with the Olive Ridley Project (ORP), celebrating a decade-long commitment to marine conservation in the Maldives.
The partnership reached a significant milestone in 2017 with the opening of the Maldives’ first veterinary-led Marine Turtle Rescue Centre at Coco Palm Dhuni Kolhu, pioneering specialised sea turtle care in the country. Since its establishment, the centre has treated and released 152 injured turtles, achieving a rehabilitation success rate of nearly 60 per cent. The facility plays a critical role in caring for turtles impacted by human activities, including entanglement in marine debris and ghost nets.
Beyond rescue and rehabilitation, the Olive Ridley Project leads long-term sea turtle research across the Maldives, collecting data on nesting activity, population trends and threats to marine life. This work contributed to the country’s first National Red List Assessment of Threatened Species, published in 2022. Supported by a network of citizen scientists, ORP’s Maldives research team has documented more than 45,000 sea turtle encounters nationwide. Over the past decade, Coco Collection has been a major contributor to this effort, recording nearly 3,500 encounters and reinforcing its position as one of ORP’s most significant research partners.
Guests at Coco Palm Dhuni Kolhu are invited to engage directly with these conservation initiatives through weekly marine talks, educational sessions led by the resort’s resident Marine Educator, and opportunities to witness rehabilitated sea turtles being released back into the ocean.
Commenting on the milestone, Siraj Waseem, General Manager of Coco Palm Dhuni Kolhu, said that celebrating ten years of partnership with the Olive Ridley Project was a source of pride for Coco Collection. He noted that what began as a shared commitment to protecting marine life has evolved into a long-term collaboration rooted in education, conservation and meaningful guest engagement, adding that the Marine Turtle Rescue Centre continues to grow in strength with ORP’s support.
Dr Martin Stelfox, Founder and Chief Executive Officer of the Olive Ridley Project, said the decade-long partnership reflects a pioneering collaboration and significant progress in sea turtle conservation in the Maldives. He highlighted advances in conservation medicine and research achieved together, as well as the impact of inspiring guests and Maldivian interns to care for and protect the country’s marine environment.
Over the past ten years, the ORP Marine Turtle Rescue Centre at Coco Palm Dhuni Kolhu has hosted ten veterinary surgeons, each contributing to the development of sea turtle conservation medicine in the Maldives. Through the Sea Turtle Veterinary Trainee Programme, the resort and ORP have trained 29 veterinary professionals from 12 countries, helping to strengthen a global network of sea turtle clinical care across the Indian Ocean and beyond.
Alongside its conservation work, Coco Palm Dhuni Kolhu continues to offer a wide range of experiences for guests, from water sports such as water skiing, surfing and parasailing to sailing, paddle-boarding and kayaking in the surrounding lagoon. Visitors can also explore Maldivian culture through curated Coco Experiences that highlight local island life and heritage. As the resort marks ten years of collaboration with the Olive Ridley Project, Coco Palm Dhuni Kolhu continues to demonstrate how meaningful conservation efforts can coexist with memorable guest experiences.
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