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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.
Centara Hotels & Resorts Maldives has invited guests to celebrate Songkran this April across its resorts in the Maldives, marking the Thai New Year through a series of experiences inspired by the brand’s Thai heritage.
The hotel group said the celebrations would reflect Thai culture and hospitality while adapting traditional Songkran elements to island settings in the Maldives. Across its resorts, the festival is being presented through activities centred on renewal, togetherness and shared experiences.
At Centara Mirage Lagoon Maldives, located within The Atollia by Centara Hotels & Resorts, the celebration is set to take place in a family-focused setting. The resort said guests could take part in water activities, beach games and poolside gatherings, followed by a Songkran carnival by the sea. Evening dining experiences will feature Thai flavours in a setting designed for families and groups.
At Machchafushi Island Resort & Spa Maldives, part of The Centara Collection, the programme will include a beachfront parade and traditional Thai games. The resort said evening events would continue with a Thai-inspired dining experience, cultural performances and entertainment. Activities for younger guests will also be included as part of the celebrations.
Centara Ras Fushi Resort & Spa Maldives, which caters to adults, is also marking Songkran with its own programme. The resort said guests could expect beachside activities, evening dining experiences and entertainment shaped around the festival’s themes of joy and togetherness.
Centara Hotels & Resorts Maldives said the Songkran celebrations across its properties are intended to give guests an opportunity to experience Thai-inspired traditions in the Maldives while creating shared holiday experiences during the festival period.
Easter at Le Méridien Maldives Resort & Spa brought together gastronomy and family-focused activities, with Michelin-starred chef Christian Sturm-Willms joining the resort for a culinary residency.
Chef Sturm-Willms, head chef of Michelin-starred restaurant YUNICO in Bonn, is known for a style that combines Japanese technique with Mediterranean and contemporary European influences. He has led the restaurant since 2012, and YUNICO has retained its Michelin star since 2016.
During the week, the chef presented his cuisine through a series of events at the resort. A sunset cocktail on the beach welcomed Marriott Bonvoy Elite members, where guests were introduced to his work through a selection of signature canapés. The main culinary event took place at Tabemasu, where Chef Sturm-Willms partnered with the resort’s executive chef, Muthuraman Subramaniam, for a five-course four-hands dinner.
The menu included dishes such as yellowfin tuna yukke and grilled scallop with avocado cream and mastudo aioli, as well as beef tenderloin served with nut butter foam. Each course was paired with wine. The menu also featured Chef Muthu’s agedashi tofu soup with yuzu kosho sorbet, while dessert was a muscovado kombu tart, described as a signature YUNICO dish.
The Easter programme continued on Easter Sunday with a buffet, a chef’s corner and a live cooking station.
Alongside the culinary events, the resort also organised a week of family activities based on a farm theme. At the Family Kids Hub, children took part in arts and crafts, cooking classes, scavenger hunts, sand golf, kids’ night camping and an Easter egg hunt, along with a visit from the Easter Bunny.
The collaboration also included sessions for the resort’s staff. Chef Sturm-Willms and his sous chef, Jannik Schrack, held a session with the culinary team on their work and the standards involved in achieving Michelin recognition. Melanie Hetzel, food and beverage manager and sommelier at YUNICO, also conducted workshops for service teams covering service standards as well as wine and saké.
Thomas Schult, general manager of Le Méridien Maldives Resort & Spa, said the Easter programme combined gastronomy, family experiences and creativity across the island. He said the residency brought together international culinary talent and the work of the resort’s team across activities and dining experiences.
Chef Sturm-Willms said it had been a pleasure to work with Chef Muthu and the culinary team at the resort. He said the collaboration reflected the importance of sharing knowledge and passion through cooking.
Le Méridien Maldives Resort & Spa is located on Thilamaafushi Island in Lhaviyani Atoll. The resort features 134 villas, including two-bedroom beach and overwater villas designed for families. It said its offering combines marine experiences, dining and family activities aimed at guests of all ages.
The Standard, Maldives has announced the launch of a new Premium All-Inclusive experience from May 2026, introducing an enhanced offering aimed at travellers seeking a seamless island holiday in Raa Atoll.
The resort said the new package was designed to combine dining, experiences and entertainment with the natural setting of the Maldives. It added that the offering had been curated with Indian travellers in mind, as India continues to grow as a source market for Maldivian tourism.
The package begins with champagne on arrival and includes access to dining across the resort’s outlets. Guests will be able to choose from three restaurants for lunch and five restaurants for dinner with prior reservation. The resort said the dining programme would range from Mediterranean dishes at Onda to Maldivian cuisine at Guduguda, offering guests a varied culinary experience throughout their stay.
The package also includes a beverage programme featuring premium spirits, wines, cocktails and beers, as well as a fully stocked minibar in each villa.
The culinary programme is led by Director of Culinary Nandakumar Dharuman. The resort said his Indian background adds familiarity for Indian travellers, with Indian breakfast options available alongside international selections. Vegetarian and Jain meals can also be prepared on request.
The Standard, Maldives said the resort would continue to offer a lively atmosphere through activities held during the week, including DJ nights, fire dance performances, bingo evenings and other social events. Breakfast DJ sessions are also part of the programme. In addition, guests booking the Premium All-Inclusive package will receive one complimentary 30-minute spa treatment and one island excursion.
Sonika Adlakha, commercial director of The Standard, Maldives, said India remained an important and growing market for the resort. She said the new Premium All-Inclusive experience was intended to offer Indian travellers a stay that combined dining, entertainment and the natural appeal of the Maldives.
Alongside its social spaces, the resort said it also offers quieter areas for guests seeking a more relaxed experience. All villas at the property include private pools and spacious living areas, allowing guests to stay close to the resort’s dining and entertainment facilities while also enjoying privacy.
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