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Underwater tales from marine biologist at Constance Halaveli

Published

13 years ago

March 16, 2013

Robin Aiello, renowned marine biologist, is at Constance Halaveli this month. Enjoy tales of her underwater adventures and find out more about your dive buddies with the special creature features she’s writing for us during her stay.

Arriving at Halaveli

It is hard to believe that I have been on this wonderful island for a week already. Time is passing too quickly and there is so much to do, and see, and explore.

I arrived last Sunday to the resort by seaplane – which in itself is a fabulous experience with wonderful views of the reefs and lagoons while enroute.

I’m staying in a Water Villa. It’s spectacular, and for me, living somewhere I can step out onto my deck and down a few stairs directly into the ocean for a snorkel is a dream come true.

Within the first few minutes of snorkelling from my deck I encountered a school of silver mullet fish hungrily feeding at the surface of the water, saw several baby blacktip reef sharks (only about 40cm long, so they were only a few days old), and spotted a manta ray passing by. Wow! What a start to my month on the island.

While I’m at Halaveli, I’ll be working with the TGI Dive Center guiding dives and snorkels and sharing all my expertise on coral reefs and the animals living there.

One of the things that has really impressed me is the diversity of the marine life on the reefs that we visit. There is just so much to see. During my stay, I’lll be writing a series of Creature Features in which I want to highlight some of the lesser well-known creatures that you can easily see while diving and snorkeling. I hope you enjoy the fun facts.

Creature Feature 1: The Redtooth Triggerfish (Odonus niger)

Also known as Black Triggerfish or Niger Triggerfish

As soon as you put your head into the waters on any of the reefs here, you can see why people come back for diving over and over again to the Maldives. The ocean is full of marine life – in every imaginable shape and colour. It is like being inside a large aquarium.

All around you fish dart to and fro – some are very curious and even change direction to pass close to your mask and look you right in the eye.

Many people ask me which is my favourite fish, and to be honest, I cannot choose – they are each so beautiful and interesting in their own way. But there is one fish that I have developed a great fondness for since being here in Halaveli – the Redtooth Triggerfish. To me, these are incredibly endearing.

Their behaviour

These fish are schooling fish that feed on zooplankton floating in the water, so they form massive groups of hundreds, if not thousands, of individuals. They hang off the edge of the reef, forming a ‘halo’ around it.

All triggerfish are easily recognised by the way they swim – they undulate their ventral (top) fin and dorsal (bottom) fin from side to side, so it almost looks like flags flapping in the breeze. When there are hundreds of fish doing this all at once, the motion is mesmerising – like a fish ballet.

Although on first glance they do not look like this would be an effective way to swim, these fish are actually highly maneuverable. They flit around in the water column catching small zooplankton (small animals that float in the ocean). In fact, when you take a close look at these fish, you can see that their tiny little mouths are upturned, pointing upwards, which makes it easier for them to grab zooplankton floating by.

Recognising the Redtooth Triggerfish

The Redtooth Triggerfish is known by many names, including Niger or Black Triggerfish. Although they can reach up to 30cm long, they are generally much smaller – about the size of you hand.

Their colours vary greatly depending on the light conditions. When schooling in deep, blue waters they appear black, but in good sunlight you can see their true bright blue or teal green colouration. And, yes, when you get a close up look at the teeth, they are in fact a dark red colour (no one seems to know why they are red). Around the head they have delicate lines that create a beautiful facial tattoo. However, for me, the most beautiful part of these fish are their long lyre-shaped tails that wave in the currents.

The triggerfish spine

All triggerfish have a shared characteristic – a spine (the ‘trigger’) on their forehead. This is a special spine that they can erect and lock into place with a second spine – much like a trigger on a gun, hence the name ‘triggerfish’.

They use this unique feature in two ways. One is for defense against being eaten by predatory fish. Imagine a fish’s surprise if it tries to swallow a triggerfish and suddenly it gets spiked in their throat by the ‘trigger’ spine.

But the most important use of the ‘trigger’ spine is for tightly wedging themselves into coral crevices or small holes in the reef while they sleep (yes…reef fish DO sleep). To stay safe, these fish find their own personal hole or crevice in the reef to hide out in. The spaces are usually so narrow that the fish need to wiggle into them by turning sideways.

Once inside the hole (usually all you can see are thee tips of the tail sticking out) the triggerfish erect their ‘trigger’ spine to lock themselves in place. In this way, any predatory fish, like a reef shark who hunts sleeping fish, cannot grab and tug them out from their holes.

When the triggerfish are ready to leave the holes, they release the ‘trigger’, lower the spine and wiggle their way out – backwards! (Yes…these are one of the few fish that I have seen that can swim tail-first!

So the next time you are diving on one of the reefs around Halaveli, take a moment to observe these little triggerfish.

Related Topics:Constance Halaveli Resort Featured Robin Aiello

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Manta season experience returns as InterContinental Maldives Maamunagau announces 2026 retreat

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February 2, 2026

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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.

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Ten years of turtle conservation: Coco Palm Dhuni Kolhu and Olive Ridley Project milestone

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February 2, 2026

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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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Dusit Thani Maldives adds padel and upgrades sports facilities

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2 days ago

February 1, 2026

m@ldives

Dusit Thani Maldives on Mudhdhoo Island in the UNESCO Biosphere Reserve of Baa Atoll has introduced padel at the resort, marking the arrival of one of the world’s fastest-growing sports as part of a broader refresh designed to enhance active, experience-led island stays.

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Commenting on the developments, Jean-Louis Ripoche, Area General Manager of Dusit Thani Maldives and dusitD2 Feydhoo Maldives, said, “From introducing padel and refreshing our tennis facilities to upgrading our villas, each enhancement has been carefully considered to support more active stays while maintaining comfort, design quality, and a strong connection to the island environment. We look forward to welcoming guests to experience these updates during their stay.”