Underwater
Marine biologist reveals what’s underwater at Halaveli
Here is third week’s instalment from marine biologist Robin Aiello sees her come face to face with the awe-inspiring whalesharks in the waters off Halaveli.
Whiptail Ray
It has been another amazing week full of beautiful dives, snorkels, lagoon cruises and island walks. The weather has been clear and warm, and the seas so calm that you can do an entire marine biology session from the surface without even getting wet.
I have, in fact, been spending hours on the jetty with guests looking down into the sea and spotting some fantastic animals. We have many harmless blacktip reef sharks that slowly cruise back and forth under the jetty, whiptail rays that look almost like eagles flying through the water, unicorn fish with their long horns sticking out from their foreheads, long slender coronet fish with their huge extended mouths, and bluefin trevallies (also called jacks) chasing schools of small silver fish.
Bluefin Trevallies

The trevallies (jacks) always put on an exciting show for us as they stalk and hunt the small silver fish that form massive schools in the very shallow water at the beach.
Small groups of 3 – 6 bluefin trevallies swim up and down the beach, getting closer and closer to the shore and forcing the small fish to form tighter and tighter schools – it is like cowboys rounding up the cattle on a range.
They do this for some time, then, without any warning, there is a huge commotion. The trevallies have decided it is time to strike, and change direction at full speed (which is really really fast) and dash through the school, grabbing fish as they go. The small silver fish, in response, take off in all directions like a firework display. They will even jump out of the water and land on the beach in their sheer panic to get away.
But, there is no where for the small fish to hide. Suddenly other predatory fish join the feeding frenzy, and if that is not bad enough, the seabirds and herons fly in from all directions to join the mayhem and pounce on any fish they can. The whole frenzied activity lasts only a few seconds, but what excitement! Sometimes I feel sorry for the poor little fish!
An unplanned evening snorkel

Probably the most unusual thing that I have seen in a long time was spotted one evening from the jetty. I was heading to dinner, all dressed up, and one of the guests asked me what it was – I had no idea – didn’t even know if it was manmade or natural.
So I ran back to my villa and grabbed my snorkeling gear and jumped into the water.
This thing was weird! At first, I had no idea what it was. It was in constant motion, rolling around and undulating, but I soon discovered it was the water movement that caused it to move – it was not actually alive. It was slimy and felt like thick mucous, and to add to the bafflement, there were thousands of little pink/purple balls embedded in it.
Finally it dawned on me that it had to be some sort of egg case – most likely molluscan from either a snail or a squid. After a couple of hours of research I discovered that it was, in fact, the egg case of a very large squid that reaches a size of over 1 metre called the Diamondback Squid. This squid would have laid the egg case out in the lagoon and the tides, currents and waves washed it into the shallows. Very interesting.
Diving with whalesharks

Yesterday, though, was the real highlight of my whole visit – every Sunday the Dive Center offers a day trip to find and snorkel with whalesharks. And what a day we had!
Thanks to our amazing boat crew, and of course the legendary snorkel guide Santana, we had the wonderful experience of swimming with 3 large whalesharks. Amazing! It is no easy feat to find a whaleshark – since they are fish, they do not come to the surface to breath like whales, so the only way to find them is to patrol an area – up and down along the coast. The crew stand lookouts on the roof of the boat looking for a large dark shadow in the water.
Then, if one is spotted, there is a flurry of activity as we get on our gear and jump overboard. At this point, the race begins. Although these huge animals are barely moving a fin at all, they maintain such a fast speed that we as mere human snorkellers must kick and kick and kick as fast as possible to keep up with them. They do not seem to be bothered by us at all – in fact, on several occasions they appeared to be curious and changed direction to come right up close underneath – within only a few metres of us.
When they are this close, they take your breath away. They really are special creatures!
They are so spectacular, that this creature will be the topic of my Creature Feature for this week.
Creature Feature – Whalesharks
Whalesharks are well known to frequent a spot on the southern part of the Ari Atoll – no one really knows why they ‘hangout’ in this area. But they seem to be mainly young-adult males that are about 6–8 metres in length.
Although this is considered relatively small for a whaleshark (they can reach sizes of over 12m) they are still incredibly impressive. In fact, whalesharks are the largest fish in the world.
Whalesharks are a type of shark – not a whale. They, like all sharks, have a cartilaginous skeleton rather than bone, have what are called denticles covering their skin instead of scales, do not have an air bladder, but use a liver full of oil for buoyancy, and of course they have ‘replaceable’ teeth rather than only one set like most reef fish. Sharks have hundreds of teeth and can go through as many as 30,000 teeth during their lifetime.
What happens is that teeth that form the ‘front-row’ periodically fall out, and within only a few days another tooth that behind in the ‘second-row’ will rotate into position. It is kind of like a conveyor belt of teeth. In this manner the shark always has fresh, sharp teeth! Whalesharks, although they do not use them, actually have about 300 very small teeth.
How whalesharks feed
So how does a whaleshark feed if it does not use teeth? Well, these giants of the sea, feed on some of the smallest animals in the ocean, plankton, by a method called filtering feeding.
Inside their mouths they have an unique system of filter-pads that trap all the small plankton – a lot like a sieve.
Whalesharks feed in two ways – ‘gulping’ and ‘ram feeding’. If there is plenty of concentrated plankton in the water, these sharks will stay in one place and take in huge gulps of water full of plankton.
If, however, the plankton is spread out in the water, then the sharks will swim at an average of 4km per hour with their mouths open – when they have enough food, they will swallow, then resume feeding – this is ‘ram-feeding’.
To watch them feed is incredible. They have huge mouths – up to 1.5 metres wide and they can filter over 300,000 litres of seawater per hour.
Identifying whalesharks by their spots
Other than the sheer immense size of these fish, the other really noticeable feature is the patterning. They are fully covered with spots and dots, and some lines – really beautiful.
They almost look like a bright starry night sky. In fact, a few years ago a couple of scientists came up with the interesting idea to use a computer program designed for tracking stars to document the spots on individual whalesharks.
Since the patterning on each whaleshark is unique for that individual (much like our human fingerprints are unique to each person), scientists have been able to compile a global database of whalesharks from photographs of their spots.
So, when you visit Halaveli Resort, be sure to take the trip out looking for whalesharks – it is fantastic!
Action
Sheraton Maldives Full Moon celebrates sixth anniversary of Reefscapers collaboration
Sheraton Maldives Full Moon Resort & Spa marks the sixth anniversary of its partnership with Reefscapers on February 19, 2026, reaffirming its commitment to protecting and restoring the Maldives’ fragile reef ecosystems. Since launching the partnership in 2020, the resort and Reefscapers have worked together to restore coral habitats, support marine biodiversity, and engage guests in meaningful conservation experiences. The milestone also marks one year since the successful relocation of approximately five tons of coral to the resort’s house reefs — one of the partnership’s most significant conservation initiatives.

Over the past six years, the partnership has become a defining pillar of the resort’s sustainability journey, blending scientific restoration with purposeful guest engagement. To date, the initiative has resulted in the planting of 898 coral frames, supporting approximately 33,000 coral colonies now growing across the restoration sites. Through coral propagation, reef monitoring, and awareness programmes, these efforts continue to regenerate reef structures while deepening understanding of the essential role coral ecosystems play in sustaining marine life and protecting coastlines. Each thriving coral frame reflects a shared dedication to preserving the natural wonders that make the Maldives one of the world’s most extraordinary marine destinations.

“What makes this partnership special is seeing how small, consistent actions turn into real change underwater. Watching the relocated corals settle, survive, and begin to grow over the past year has been incredibly rewarding for us and the guests who return and witness how they’ve helped restore a living reef,” shares Katelyn, the resort’s Marine Biologist.
A defining achievement of the collaboration has been the coral relocation project, which carefully transferred coral colonies from Ras Malé, also known as the Maldives Eco City, to the resort’s dedicated restoration site, safeguarding them from potential threats linked to land reclamation activities in the Fushi Dhiggaru Lagoon. One year on, these corals continue to flourish beneath the surface, strengthening reef resilience and contributing to the long-term health of the surrounding ecosystem.

At the heart of the partnership lies the resort’s Adopt a Coral programme, part of the Good Travel with Marriott Bonvoy initiative, which encourages guests to travel with intention through meaningful environmental experiences. Through this hands-on activity, visitors can adopt and name a coral frame while learning directly from marine experts about coral ecology and the importance of protecting marine habitats.
To deepen this connection beyond the stay, guests receive growth updates on their adopted corals every six months, allowing them to follow the progress of their living contribution to the reef. As these corals grow over time, they become enduring symbols of renewal and shared responsibility, transforming a holiday memory into a lasting environmental legacy, and reflecting how travel can positively support local ecosystems and communities.

“Our island is surrounded by a remarkable marine environment, and protecting it is a responsibility we take seriously. Our partnership with Reefscapers reflects our belief that hospitality should go hand in hand with stewardship. Seeing the reef restoration progress over the past six years, and the involvement of our guests and associates in that journey, makes this anniversary especially meaningful for all of us,” comments Greg Allan, General Manager of Sheraton Maldives Full Moon Resort & Spa.
Through its continued collaboration with Reefscapers, Sheraton Maldives Full Moon Resort & Spa remains dedicated to advancing marine conservation while creating purposeful guest experiences rooted in sustainability, education, and connection to nature.

To discover more about the resort’s sustainability initiatives, join the Adopt a Coral programme, or plan a stay that supports reef conservation, visit sheratonmaldives.com or contact the reservations team at Sheraton.Maldives@sheraton.com.
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Sun Siyam Vilu Reef unveils expanded marine excursion portfolio
Sun Siyam Vilu Reef, part of the Sun Siyam Privé Collection, has introduced an expanded portfolio of water-based experiences designed to showcase the natural environment and marine life of the surrounding atolls. The enhanced programme combines exploration, activity and moments of calm, offering guests new ways to experience the Maldives through curated ocean journeys and personalised excursions.
Building on established activities such as Jet Car rides, SeaBob adventures and windsurfing, the resort has expanded its watersports offering to include private speedboat journeys and bespoke marine experiences. These additions are tailored for small groups seeking intimate and meaningful encounters with the ocean.
Available daily from the resort’s Watersports Centre, the new private speedboat excursions provide a personalised way to explore the hidden marine sites of Dhaalu Atoll. Designed for one to four guests, each journey offers flexibility and individual attention. Guests may choose from four-hour, five-hour or full-day itineraries, all of which include a freshly prepared barbecue lunch. From coral gardens to secluded sandbanks, the excursions highlight the region’s diverse marine landscapes.
The programme’s centrepiece is the Full Day Adventure Trip, which offers an extended exploration of key marine locations. Highlights include the Coral Garden, known for its biodiversity and reef formations; Turtle Point, where sea turtles are frequently sighted; and Nurse Shark Point, which provides opportunities to observe nurse sharks in their natural environment. The experience concludes with a beachside lunch on a private sandbank, set against uninterrupted views of the Indian Ocean.
For guests seeking a balance between activity and relaxation, the Waves of Adventure and Calmness experience combines a private two-hour snorkelling safari or Jet Ski safari with a full-body massage at the resort. The programme is designed to transition smoothly from ocean exploration to restorative island time, reflecting the relaxed pace that characterises Sun Siyam Vilu Reef.
As part of the Sun Siyam Privé Collection, Sun Siyam Vilu Reef continues to focus on personalised service and experiences rooted in the natural setting of the Maldives. Through its expanded watersports offering, the resort invites guests to engage with the marine environment while enjoying a sense of privacy, discovery and connection to the Maldivian seascape.
Action
Atmosphere Foundation launches annual dive training scholarship for Maldivians
Atmosphere Foundation has launched a new annual scholarship programme that will sponsor 10 Maldivians each year to complete internationally recognised scuba diving training and professional development pathways, supporting youth career growth while strengthening the Maldivian workforce in tourism.
Designed to create clearer entry points into the industry and help Maldivians advance from foundational training to professional roles, the programme will provide sponsored candidates with access to a structured set of certifications that can lead to employment opportunities in resort dive centres, watersports operations, and marine excursions across the country.
The programme will support both beginners and those already working in the sector who want to progress further. By sponsoring these certifications, the initiative aims to help participants develop technical competence, safety capabilities and professional readiness—skills that are essential for career progression in dive and marine-related roles within the tourism industry.
To ensure the programme delivers direct long-term value to the Maldives, successful candidates will be required to work in the Maldives for a specified period after completing their course. This service commitment is intended to strengthen local capacity within the tourism workforce, help resorts access qualified Maldivian professionals, and support career continuity for young people entering the sector.
“Tourism is the Maldives’ greatest economic mainstay, and our future depends on ensuring Maldivians are represented across the industry—not only at entry level, but in specialist and leadership positions as well,” said Abdul Azeez Abdul Hakeem, Vice President of Atmosphere Foundation. “This programme is designed to remove barriers to training, equip young people with globally recognised qualifications, and support them to progress from the beginning of their careers to new heights. The service component also ensures that the skills gained remain in the Maldives and contribute to the development of our tourism workforce.”
Atmosphere Foundation continues to develop and support initiatives that contribute to community wellbeing and opportunity, with a focus on empowering youth, building skills, and creating sustainable pathways for Maldivians. The annual dive training sponsorship programme builds on the Foundation’s broader mission to deliver meaningful, practical support that helps individuals and communities thrive—while contributing to the long-term resilience of the national economy.
Further information on how to apply, programme partners and timelines will be announced soon through Atmosphere Foundation’s official channels.
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