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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.
Baros Maldives will welcome guests for its festive season from 22 December 2026 to 7 January 2027, with a programme centred on the island’s natural surroundings, Maldivian heritage and a series of culinary, marine and cultural experiences.
The programme will combine Christmas and New Year traditions with activities inspired by island life, including ocean excursions, local cultural experiences, festive dining and wellbeing sessions.
The season will begin with a Christmas Tree Lighting ceremony, followed by a series of activities introducing guests to festive traditions and Maldivian culture. These will include a Christmas cookie workshop, an Ocean, Coconut & Spice cooking class, a Maldivian Heritage Evening and an Island Christmas Market.
Marine experiences will remain a central part of the festive programme. Guests will be able to join a Sunrise Nooma sailing experience, take part in fishing trips at sunrise or twilight, explore the house reef with the resort’s marine team or join a dolphin-watching cruise.
Private yacht excursions, visits to local islands and trips to Malé will also be available for guests wishing to explore beyond the resort.
Baros Maldives will also offer a series of culinary experiences throughout the festive period. These will include a Sake Pairing Dinner, a Great Gatsby-themed five-course dinner and a Champagne Dinner inspired by the Seven Seas.
Other dining experiences will include a Butcher’s Block buffet, an Omakase tasting lunch and a Master Chef Tuna Carving Show & Tasting. Guests will also be able to take part in wine discovery experiences, cocktail-making sessions and an Island Crafted Cocktails programme.
On Christmas Eve, guests will gather at The Lighthouse for a cocktail reception before continuing to Lime for the Christmas Eve Gala Dinner.
Christmas Day will feature breakfast, festive activities and time for guests to enjoy the beach, lagoon and other island experiences with family and friends.
New Year’s Eve celebrations will begin with a cocktail reception, followed by a Gala Dinner, live entertainment and the countdown to 2027.
New Year’s Day will start with a celebratory brunch, followed by a selection of wellbeing and dining experiences. These will include a beachfront degustation dinner accompanied by live violin and saxophone performances.
Younger guests will also have a dedicated programme of festive activities, including mocktail-making, Christmas cookie workshops and island-based activities designed for families and children.
Throughout the season, Baros Maldives will host live music, marine presentations, yoga and meditation sessions alongside its wider programme of dining, recreation and ocean experiences.
The festive programme is intended to reflect the character of Baros Maldives by combining Christmas and New Year celebrations with the island’s marine environment, culinary offering and Maldivian culture.
From 21 December 2026 to 1 January 2027, Niva Kuramathi will mark the festive season with “A Tropical Festive Season”, a programme of dining, entertainment, outdoor activities and family experiences shaped around the island setting.
The programme will make use of Kuramathi’s natural surroundings, including its house reef and sandbank, alongside its 12 restaurants and seven bars.
The festivities will begin on the evening of 21 December with a Christmas Tree Lighting ceremony on the sandbank. Guests will be welcomed with drinks and live music at sunset, followed later in the evening by a traditional Bodu Beru performance.
On 28 and 29 December, the resort will host a traditional Maldivian Market, featuring Bodu Beru drumming, a folklore parade and locally made artisanal crafts.
Christmas Eve festivities
Christmas Eve celebrations will begin on the sandbank at sunset, with welcome drinks and Christmas carols. Santa Claus and his elves will also make an appearance before guests gather for a gala buffet dinner.
The evening will conclude with an outdoor screening of a classic Christmas film under the stars.
Countdown to 2027
New Year’s Eve celebrations will begin at sunset with cocktails on the sandbank.
A gala dinner will then be served across Farivalhu, Malaafaiy and Haruge restaurants before the countdown to 2027. Fireworks will mark the arrival of the New Year, while live music and DJ performances will continue at Fung Bar and Sand Bar.
Festive activities
Throughout the festive period, Niva Kuramathi will offer a programme of recreational, culinary and entertainment activities.
Guests will be able to take part in moonlit yoga sessions on the sandbank, sand sculpting, Sip & Paint evenings for couples and fire dance performances.
Sporting activities will include beach volleyball, a football match between the Niva Kuramathi team and guests, as well as kayak, pedal boat and stand-up paddleboard races.
The entertainment programme will also include wine tastings, karaoke, music trivia, live music and DJ evenings.
Cooking classes will be held at Kobe, where guests will be able to take part in sessions centred around the restaurant’s open kitchen experience.
The festive programme is designed to allow guests to participate in scheduled activities while also having the option to spend time at leisure.
The season will conclude on 1 January 2027 with a late-morning brunch and the first house reef dive of the year.
Festive programme for children
Bageecha Kids Club will host a separate festive programme for younger guests, combining recreation, creative activities and environmental learning.
Activities will include treasure hunts, splash pad games, cookie-making, arts and crafts, eco workshops, nature exploration, holiday films, karaoke, bracelet-making and gardening in the resort’s hydroponic garden.
Children will also be able to take part in scavenger hunts, mini-Olympic games, yoga and disco dancing, as well as shared lunches and dinners with other young guests.
On Christmas Eve, the programme will begin with a family photograph session, followed by gingerbread house decorating, writing letters to Santa, a palm-leaf handicraft workshop and outdoor games.
Christmas morning will feature a pyjama party with musical games and pool activities. Later in the day, families will gather at Athiri Deck to welcome Santa Claus, who will distribute gifts to children.
New Year’s Eve activities for younger guests will take place during the afternoon, with music and games around the pool followed by a children’s disco as part of the resort’s final celebrations of 2026.
Nova Maldives will renew its partnership with PADI this September to co-host Project AWARE Week from 16 to 20 September 2026.
Organised by the resort’s marine team, the programme will give guests, from first-time snorkellers to experienced divers, opportunities to combine marine wildlife observation with practical conservation activities. The initiative is intended to turn time spent in the ocean into an educational experience while encouraging greater awareness of marine conservation.
This year’s AWARE Week coincides with PADI’s 60th anniversary and Nova Maldives’ fourth year of operation in South Ari Atoll. Now in its eighth global edition, PADI AWARE Week has developed into a citizen science movement within the diving community and has helped rescue more than 41,000 entangled marine animals to date.
Through its continued participation, Nova Maldives aims to encourage guests to become ocean advocates and remain engaged with marine conservation beyond their stay.
Guests staying at Nova during AWARE Week will be able to participate in a programme designed for different levels of ocean experience. Activities will include:
- Ocean immersion and storytelling: Sessions inspired by Blue Planet and other ocean documentaries, highlighting the diversity and vulnerability of marine life.
- Dive Against Debris: Underwater clean-up dives in the resort’s lagoon, during which participants will remove plastic and other waste before recording the findings in PADI AWARE’s global database.
- Whale shark snorkelling: Guided encounters that will allow guests to swim alongside whale sharks in the open waters of South Ari Atoll.
- Manta ray and turtle-spotting excursions: Guided boat trips to feeding and nesting areas where manta rays and turtles can be observed in their natural habitats.
- Coral restoration workshops: Practical sessions introducing guests to coral planting and the resort’s ongoing reef regeneration work.
“Some of the most meaningful work happens when you show up year after year. Four years into Nova’s story, we’ve learned that the health of the reef tells us a great deal about the impact we’re making, and that the guests who choose to return aren’t just here for the view,” said Abdulla Aboobakuru, General Manager of Nova Maldives.
“They’re here because Nova reflects something they already care about, including care for the ocean, a sense of community and a more thoughtful way of experiencing the places we visit. That’s what we hope Nova can inspire in new and returning guests alike: less a destination, more a calling.”
The resort’s marine conservation work continues throughout the year. Its coral nursery contains a growing collection of metal frames holding individually secured coral fragments, which are later transplanted onto the house reef. Guests are regularly invited to participate in the planting process, while the marine team monitors the young coral colonies as they develop.
Nova Maldives also maintains partnerships with the Maldives Whale Shark Research Programme and Manta Trust. The resort is accredited as a Responsible Manta Tourism Operator, with the partnerships supporting its year-round approach to marine conservation.
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