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Underwater tales from marine biologist at Constance Halaveli
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.
Finolhu, a Seaside Collection Resort, has completed a four-day coral transplantation programme, reinforcing its ongoing commitment to marine conservation. Led by the resort’s marine biologist, Ivanna Tobar, the initiative involved the replanting of approximately 1,200 coral colonies from Finolhu’s nurseries to its house reef, strengthening one of the Maldives’ most critical marine ecosystems.
The programme was notable for its collaborative approach, bringing together four marine biologists from neighbouring resorts—JOALI BEING, Westin, Coco Palm, and Dusit Thani. Visiting experts Philippa Darby-shire Jenkins (JOALI BEING), Rosalie Bailie (Coco Palm), Harry Longin (Westin), and Louna Marchand (Dusit Thani) took part in hands-on transplantation dives, equipment preparation, and reef health management activities, including the removal of invasive pincushion sea stars.
Steven Phillips, General Manager of Finolhu, said the initiative extended beyond coral restoration: “This represents a unique opportunity to unite resorts, share expertise, and promote marine conservation at the highest level. Healthy reefs are essential not only for the Maldives’ biodiversity but also for the wellbeing of local communities and the sustainable future of tourism. Through this collaborative effort, we have created a lasting impact in safeguarding these underwater landscapes for our guests and for generations to come.”
Coral conservation remains crucial in the Maldives, where reefs provide natural protection against coastal erosion, support fisheries relied upon by local communities, and sustain the nation’s tourism industry. Pressures such as rising sea temperatures, pollution, and human activity have intensified threats to these ecosystems, making restoration work increasingly vital to preserve the country’s natural heritage and marine resilience.
The four-day initiative combined restoration activities with knowledge exchange. Morning briefings prepared participants for the day’s dives, while afternoon sessions focused on reef assessments and equipment readiness for subsequent activities. This integrated approach not only accelerated restoration but also enhanced regional expertise in reef management.
The event forms part of Finolhu’s wider environmental stewardship strategy. Alongside coral restoration, the resort manages a coral nursery, monitors reef health, and develops sustainable marine practices to ensure the vitality of its house reef. Guests are also encouraged to engage with conservation initiatives through experiences such as the Coral Conservation Package, which combines education with hands-on involvement in reef restoration projects.
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Freediving with tiger sharks: Shark Expedition Fuvahmulah collaborates with marine biologist Andriana Fragola
Shark Expedition Fuvahmulah, renowned for its world-class scuba diving encounters, has announced an exciting expansion: the chance to freedive with tiger sharks in the Maldives’ southernmost atoll.
Fuvahmulah, often hailed as the “Tiger Shark Capital of the World,” is the only place on the planet where year-round encounters with tiger sharks are virtually guaranteed. With more than 280 identified resident tiger sharks, the island has become a bucket-list destination for divers and marine enthusiasts alike.
The newly introduced freediving experience offers a unique way to interact with these apex predators. Unlike scuba diving, freediving takes place without bubbles or heavy gear, allowing participants to connect with tiger sharks in a quieter, more natural way. This approach often makes the encounter more comfortable for the sharks and more intimate for the diver.
Guiding these expeditions is Andriana “Andy” Fragola, a marine biologist, shark diver, and conservationist currently based in Hawaii. Andy holds a Master’s Degree in Marine Conservation Biology with a focus on shark microbiology and has dedicated her career to shark research, conservation, and public education. Through her work in media and content creation, she strives to raise awareness about the importance of shark conservation and inspire people to take action to protect marine ecosystems.
“Freediving with tiger sharks is a raw and transformative experience,” says Andy. “Being eye-to-eye with these incredible animals without the barrier of scuba gear allows you to see them for what they truly are—powerful, intelligent, and essential to the health of our oceans.”
Shark Expedition Fuvahmulah ensures that all freediving activities are conducted under strict safety protocols. With experienced professionals like Andy leading the dives, participants can expect both an exhilarating and responsible adventure.
Why this experience stands out:
- Eye-to-eye encounters with tiger sharks in their natural habitat.
- A deeper, more personal connection with marine life.
- Expert-led guidance ensuring safety and conservation awareness.
In addition to freediving, Shark Expedition Fuvahmulah offers a range of packages, including accommodation options, making it easier for adventurers to fully immerse themselves in the island’s extraordinary marine environment.
For bookings and more information:
📧 Email: sales@scuba-expeditions.com
📱 WhatsApp: +960 9894653
🌐 www.scuba-expeditions.com
Holiday Inn Resort Kandooma Maldives has announced the return of Manta Month this September, following the success of last year’s initiative. Now established as an annual programme, the celebration offers guests of all ages the opportunity to engage with the ocean while supporting marine conservation, with a particular focus on the manta ray.
Throughout the month, guests are invited to take part in guided excursions to known manta hotspots, led by the resort’s experienced team, who share insights into manta behaviour and conservation. Awareness talks highlight the story of a manta rescued near the island, serving as a reminder of the resort’s continuing efforts to protect marine life. Children can enjoy manta-themed arts and crafts as well as beach games, while the wider community will join reef and island clean-up activities, with collected waste repurposed into manta sculptures. In addition, proceeds from manta pendant sales at the resort’s retail boutique will be donated to The Manta Trust, extending support for research and protection initiatives.
Located close to several of the Maldives’ top ten dive sites, Holiday Inn Resort Kandooma Maldives places importance on the wellbeing of the ocean and its ecosystems, a priority shared by both guests and staff. The resort’s sustainability initiatives are aligned with IHG’s purpose, True Hospitality for Good, through its Journey to Tomorrow programme, which supports the United Nations Sustainable Development Goals and demonstrates a commitment to long-term environmental protection.
Commenting on the event, Mark Eletr, General Manager of Holiday Inn Resort Kandooma Maldives, said: “What started as a special event last year has now grown into an annual month-long celebration. Kandooma Manta Month is not just about seeing these magnificent creatures up close, but about creating meaningful experiences that inspire awareness, responsibility, and care for our ocean environment.”
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