Underwater

Marine biologist reveals what’s underwater at Halaveli

Published

11 years ago

May 9, 2013

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!

Up Next

Experience the fascination of manta rays with the Sultans way

Don't Miss

Diving with Prodivers at Kuredu

Click to comment

Action

International PADI Women’s Dive Day celebrations with Manta Rays at The Nautilus Maldives

Published

2 weeks ago

July 13, 2024

m@ldives

Celebrate International PADI Women’s Dive Day on July 20th at The Nautilus Maldives, an ultra-luxury island resort in the UNESCO Biosphere Reserve of Baa Atoll. This special day invites female divers to embark on a free-spirited underwater journey, creating unforgettable memories beneath the waves.

Explore the island’s stunning house reef at the lagoon’s edge, or dive into the world-renowned Hanifaru Bay, where you can swim among whale sharks and the captivating manta rays. Hanifaru Bay, one of the largest manta-feeding hotspots in the world, offers a unique opportunity to witness these majestic creatures perform their mesmerising, timeless dance during manta season.

On this special day, The Nautilus Maldives is offering a 50% discount on Double Tank Dives for certified female divers, with prices starting at AED 1726++ and 50% of scuba diving throughout the day starting at AED 1286++. Additionally, female guests can enjoy complimentary Try Dive sessions in the resort’s Naiboli Pool throughout the day.

Action

Kandooma Maldives extends Dive Free promo until 31 October 2025

Published

3 weeks ago

July 6, 2024

m@ldives

In August last year, Holiday Inn Resort Kandooma Maldives, launched a ‘Dive Free’ promotion offering free scuba diving for guests. A year on, and due to the overwhelming success of the promotion, Kandooma’s Dive Free has been extended until 31 October 2025.

“When we launched ‘Dive Free’ we knew this inclusion would set us apart from our competitors and it did. It has been extremely well received by scuba divers from around the world visiting the Maldives,” said Mark Eletr, General Manager, Holiday Inn Resort Kandooma Maldives.

“I think in part the promotion’s success is also due to our location on the doorstep to some of the Top 10 sites in the Maldives just a 15-minute boat ride away from the resort, making it possible for multiple dives in one day.”

Talking about the promotion, Mark explained that the scuba diving inclusion is for guests staying three or more nights.

“The ‘dive free’ element is treated similarly to how we treat breakfast, snorkelling lessons and access to the Kids’ Club. It’s just part of a Kandooma stay,” added Mark.

The resort has its own five-star PADI resort dive centre, Kandooma Dive, complete with experienced and professional dive instructors, purpose-built facilities, and a dedicated fleet of dive boats. In 2023, Holiday Inn Resort Kandooma Maldives was named the Best Dive Resort in the Maldives, an award it has been nominated for again in 2024.

Divers can expect to see a wealth of marine life, including manta rays, whale sharks, reef sharks, colourful reef fish, turtles, eagle rays, and various coral species. Some of the dive spots near to Kandooma include:

Kandooma Thila: This renowned pinnacle showcases schools of vibrant fish, colourful coral formations, and abundant marine life including white-tip reef sharks and eagle rays; the site is a captivating spectacle of biodiversity.
Guraidhoo Corner: Drift along the currents and witness the congregation of grey reef sharks, white-tip sharks, and eagle rays. The site’s dramatic underwater structure adds to the allure of this exciting dive.
Cocoa Corner: Known for its thrilling currents, this site is a magnet for aquatic species. Divers often spot hammerhead sharks, manta rays, and other large marine inhabitants as they glide through the deep waters.
Kuda Giri: The Kuda Giri wreck is an interesting dive site in South Malé in the Maldives. It includes both a small wreck and a pinnacle. The site has created a welcoming habitat for a variety of marine life. There is hardly any current around this area, making it suitable for less experienced divers.
Manta Point: Witness the mesmerising dance of manta rays as they gather to feed and be cleaned by smaller fish. This site promises awe-inspiring interactions with these majestic creatures.
Kandooma Caves: Explore a labyrinth of swim-throughs and underwater caverns adorned with sponges and gorgonians. The site is known for its macro life and the occasional appearance of larger predators.

“We are passionate about life beneath the surface, it truly is an aquatic wonderland,” said Mark.

“I’m a keen diver myself and exploring and sharing the deep blue with our guests is one of the highlights of my time here in the Maldives.” he added.

Dive Free inclusions are available to full-paying guests staying a minimum of three nights and include two single tank group dives for two certified divers per villa, per day of stay. All dives are fully guided, including free dive equipment, boat transfers, and air/Nitrox. Guests must be fit to dive and be fully certified. The offer is governed by PADI best practice, meaning there is no diving on the day of departure and surface intervals are observed. Any unused dives can only be rolled over to other days at the discretion of the Dive Centre Manager, and unused dives are not encashable or exchangeable for other services.

Holiday Inn Resort Kandooma Maldives is a beautiful natural island paradise located in the South Male Atoll, just 40 minutes from the airport by boat. White sand beaches, swaying coconut palms, and turquoise waters form the exquisite backdrop for various leisure pursuits and some of the best diving in the Maldives.

Guests can choose from Garden and Beach Villas, two-storey Beach Houses, the three-bedroom Beach Pool Villa and the popular Overwater Villas with direct ladder access to the water below.

Families are well catered for with the Kandoo Kids’ Club, which has a dedicated water zone with slides and a full activities programme.

After a day of diving, you will have a healthy appetite. Delight in a choice of six food and beverage outlets, offering an array of delicious cuisine and a showcase of Maldivian flavours influenced by India and Arabia.

Between dives and for those guests who desire the ultimate in relaxation, sun loungers and hammocks are located around the island. At the same time, the tranquil Kandooma Spa by COMO Shambhala is the ideal place to unwind.

With the warm Indian Ocean teeming with marine life, good visibility, and a five-star PADI resort Dive Centre, it’s easy to see why Holiday Inn Resort Kandooma Maldives was named Best Dive Resort 2023. At Kandooma, scuba diving is elevated into an immersive experience that forever lingers in the heart and memory, and it’s FREE.

Action

Dive deep in Addu Atoll: Become a TDI Decompression Diver with Aquaventure Tec Center

Published

1 month ago

June 26, 2024

Maldives Insider

Calling all adventurous divers in the Maldives! Are you ready to push your diving limits and explore the incredible underwater world of Addu Atoll on a technical level? Aquaventure Tec Dive Center, the only TDI center in the Maldives, is offering a unique opportunity to take your first steps into technical diving with their TDI Advanced Nitrox & Deco Pro course package.

This exclusive July, August, and September offer includes a 7-night stay, allowing you to fully immerse yourself in the TDI certification process. The 6-day course will equip you with the knowledge and skills to safely dive up to 45 meters, unlocking a whole new realm of underwater exploration in Addu Atoll.

Package Highlights:

TDI Advanced Nitrox & Deco Pro Course: Gain the expertise to confidently navigate deeper dives.
Bonus Twinset Training Dives: Experience diving with a twinset configuration for increased gas supply.
Free Tec Equipment Rental: Utilize top-of-the-line technical diving equipment during the course.
Free Accommodation: Relax and recharge after a day of diving exploration (accommodation details not specified).
Unbeatable Price: USD 1400 (excluding TDI certification fees of USD 60 per course)

Why Choose Aquaventure Tec Dive Center?

Learn from the Best: Train with TDI Instructor Trainer Marc Kouwenberg, a leading technical diving expert in the Maldives.
Convenience & Flexibility: Monthly TDI courses ensure you can find a program that fits your schedule.
Trusted Expertise: TDI is the world’s leading technical diving certification agency.

Ready to Dive Deeper?

Don’t miss this chance to elevate your diving experience in the magnificent Addu Atoll. Contact Aquaventure Tec Dive Center today via WhatsApp at +960 7974310 to secure your spot and embark on your technical diving journey!