News
Rare Caribbean coral grown in lab for the first time
Caribbean pillar coral, a rare and threatened coral species, has been bred and raised in a lab by scientists for the first time.
The work provides the first photos and documentation of juveniles of this species, and could provide information to aid the conservation of coral reefs in the study area.
The team plans to “out-plant” these lab-grown juveniles in the wild, which could help populations become more resilient to climate change.
The Caribbean pillar coral Dendrogyra cylindrus is rare and understudied, and small juveniles of this species have never been seen in over 30 years of surveys in the Caribbean. The species is one of very few corals in the Caribbean that forms large branches which can provide shelter for important fish species and can reduce the energy of storm surge as it approaches shore.
“Strangely enough, pillar corals happen to spawn just half an hour before another threatened coral that is far better studied —t he elkhorn corals,” says Kristen Marhaver, lead author of the study and senior fellow at TED.
“So the reason why for so many years we’ve never witnessed spawning pillar corals is that while they were spawning, virtually all coral spawning researchers and photographers in the Caribbean were on their boats doing final preparations on their dive gear for elkhorn coral spawning. It was literally right under our noses for years.”
The findings were presented at a TED Conference in Vancouver, Canada last night, and also appears in the journal BMC Ecology. Mónica Medina, associate professor of biology at Penn State, is a coauthor of the study.
‘SMOKE STACK’ CORALS
Pillar corals form a unique “smoke stack” shape like no other coral species, and they display unusual mating behavior compared to most spawning coral species. Most spawning corals are hermaphrodites that release large bundles of eggs and sperm.
Pillar corals, which spawn only on a few specific nights of the year, build colonies that are either all male or all female. The males first release sperm into the seawater, shortly followed by the females releasing their individual eggs. This timing makes collection and breeding research extremely difficult.
“Now that we’ve successfully reared juvenile pillar corals in the lab, not only can we study them in more detail to find out what factors could be threatening their survival in the wild, but it also means that we can try to out-plant a small number back to the reef,” says Marhaver, who began this work as a postdoctoral researcher at the University of California.
“We don’t know if this will work and it is certainly not a cure-all for the reef. But especially in such a rare coral species, a tiny boost of a few new individuals could make a big difference in their genetic diversity, allowing their populations to adapt and become more resilient to the changing environment in the oceans.”
AFTER THE FULL MOON
After studying the sunset times and lunar cycles taken from other spawning observations, the research team timed their egg and sperm collection around the most likely annual spawning times — exactly three nights after the August full moon and around 100 minutes after sunset.
At depths of roughly 20-22 feet on a Curaçaoan coral reef with a large population of pillar corals, the team arranged nets and funnels over the female colonies to automatically collect eggs, and used syringes near the male colonies to manually collect sperm from spawn clouds as they appeared.
The team then attempted to fertilize the eggs by mixing the collected eggs and sperm underwater and on shore.
In the lab, the team carefully adjusted several factors related to fertilization times and seawater type and nurtured the eggs to develop into larvae. The scientists managed to successfully grow the embryos to the swimming larvae stage—the first time this have ever been seen—and settled them onto ceramic tripods in water tanks. The settled juveniles then survived for over seven months.
HOW TO PROTECT CORALS
Now that they have determined how best to grow these coral in the lab, work can begin on studying how different factors affect their survival. By testing in the lab the effect of water type, contaminants, or the presence of different species of animals and bacteria, the scientists may be able to translate these findings to the wild, and explain why juvenile pillar corals are missing in certain areas.
This research may help to support the protection of local coastal areas. Populations of branching coral colonies often are identical genetically, making them extremely susceptible to threats such as disease and temperature shock. The team therefore plans to return a few lab-reared juveniles to the reef to see if they will grow and help jump-start the population’s genetic diversity.
This work could help the species to adapt and to become more resilient to threats such as climate change. Evidence is growing that juvenile corals can adjust better than adult corals in some places to changing environments. The introduction of new juveniles to the reef, therefore, could help buffer these ecosystems against global threats that affect all corals.
“Given how rare the juveniles are in nature, it was a bit of a question whether the species was still reproducing at all,” says Marhaver. “Corals can also reproduce by fragmentation, so a huge field of pillar corals could in fact be from one single parent colony and might not be able to reproduce.
“Now that we have some of the first solid evidence that they are still able to reproduce, it means we can be cautiously optimistic about the future of this threatened species.”
Source: www.futurity.org
Photo: Kristen Marhaver
Welcome to Day 5 of Scubaverse.com’s week-long Christmas Gift Guide!
Struggling to find the perfect gift for that special scuba diver in your life? Read on for Team Scubaverse’s pick of this season’s must-have Christmas gifts.
Every day this week, we are publishing a special Christmas Gift Guide full of different gift ideas that are all ideal for divers, so you’re sure to find something that’s perfect. Take a look at today’s selection below…
SlipIns DiveSkins
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DiveSkins are perfect for scuba diving, snorkeling, swimming, paddling, surfing, and all water sports. It shows up beautifully in pictures under water.
This tight-fitting, tailored lycra suit offers maximum comfort. stretchy, breathable, fast-drying fabric with the world’s best sun and stinger protection.
SlipIns are:
*Ultimate 50+ UPF sun protection
*Abrasion protection.
*Quick dry, breathable, soft fabric
*The ultimate stinging critter protection
Save 10% on your order if you mention you saw this ad in Scubaverse in your order note!
SAVE YOUR SKIN…WEAR OUR SKINS
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Diving Books from Miflex Hoses
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We stock a great range of Diving & Underground book titles, ideal to add to any order or simply buy as a gift for a friend.
Titles we have include:
Shipwrecks of the Dover Straits, Adventures Underground, Pioneers Beneath the Peak, Dive Truk Lagoon, Underwater Potholer, Images Below & many more.
From Authors including:
Stefan Panis, Martyn Farr, Duncan Price, Ron Young, Rod Macdonald, Chris Howes
Visit our website for more details.
sales@miflexhoses.co.uk / www.miflexhoseshop.co.uk / miflexhoseshop.co.uk/acatalog/Diving-Books.html / Miflex Hoses on Facebook
OrcaTorch D710 Dive Light – now available in pink!
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Already available in Black, Green, Red and Blue, the D710 Dive Light from Orcatorch is now available in Pink too.
Whether you’re a recreational or a professional diver, you’ll find the OrcaTorch D710 dive light useful in your underwater activities.
With max 3,000 lumens, the D710 is one of the strongest torches in its class. You also have plenty of brightness settings to choose from if you prefer less power.
It runs on one OrcaTorch 21700 5000mAh rechargeable battery with a Type-C charging port, easier for you to charge it anywhere. Now it offers five exterior colour options: Black, Green, Red, Blue, and Pink, to satisfy your diverse needs.
Featuring:
* Uses Luminous LED, max 3000 lumens
* Uses 1 * 21700 Li-ion battery
* 6° beam angle
* Offers four exterior colour options: Black, Red, Green and Blue
* Easy operation with side titanium alloy push-button switch
* Safe lock function, prevents mis-operation
* Intelligent Over-Heat protection
* Battery indicator
* Water pressure resistant construction, depth rated to 150 meters
* Reverse polarity protection, to protect from improper battery installation
* Over-discharge protection function
* Constructed from high-strength A6061-T6 aluminum
* Mil-Spec Type III hard anodized finish for durability and corrosion resistance
* Two sides coated toughened glass with high water pressure resistance under deep water
Sea & Sea is the home of OrcaTorch and other leading diving brands in the UK.
sales@sea-sea.com / www.orcatorch.com / OrcaTorch on Facebook / OrcaTorch on X / OrcaTorch on YouTube
Scubapro Luna 2 AI Dive Computer
Scubapro Europe Website / Scubapro USA Website / Scubapro on Facebook / Scubapro on Instagram / Scubapro on YouTube
SCUBAPRO, the world’s premier manufacturer of high-quality scuba diving equipment, introduces its second generation Luna 2.0, an easy-to-read, intuitive dive computer loaded with easy-to-use features and available in two versions, the Luna 2.0 and Luna 2.0 AI with wireless air integration.
Designed for new and casual recreational divers, the low-profile Luna 2.0 sits comfortably on the wrist. Its oil-filled plastic housing helps ensure reliable performance to depths of 120 meters. A large widescreen display features a high-contrast black and white matrix-segment LCD with full-sized characters for easy reading in all dive conditions. An intuitive menu and simple two-button interface lets the diver navigate the system with ease, aided by clearly marked screen prompts. The LUNA 2.0 offers two algorithms – Predictive Multi-Gas Bühlmann ZH-L16 ADT MB PMG or ZH-L16 + GF PURE, plus 21-50% nitrox compatibility and three selectable gasses for open circuit diving. Three dive modes are available – Scuba, Apnea and Gauge – to suit a range of diving activities.
The Luna 2.0 AI (air integrated) offers the same easy-to-use features and functions as the standard Luna 2.0 plus adds wireless air integration. This not only enables to easily monitor ythe tank pressure, it also provides true remaining bottom time (RBT) and allows the air consumption to be factored into the decompression calculation. Also available with the Luna 2.0 AI is an optional integrated heart rate monitor that lets visually track the heart rate and skin temperature to help staying in the personal target zone.
Both Luna 2.0 models include personalized dive management functions like PDIS (Profile Dependent Intermediate Stops) which calculates an intermediate stop based on N2 loading, current and previous dives and breathing mixes, and Microbubble levels that give the option to adjust the level of conservatism in the algorithm to match the individual experience level, age and physical conditioning for a more enjoyable dive.
The soft silicone arm strap offers a comfortable fit on the wrist, plus bungee mounts on the corners of the housing allow for alternate attachment methods. A Bluetooth Low Energy interface enables the download of the dive data to any iOS or Android device or PC/Mac (firmware can be user-updated), and the CR2450 battery is rated for up to two years or 300 dives.
Scubapro Europe Website / Scubapro USA Website / Scubapro on Facebook / Scubapro on Instagram / Scubapro on YouTube
35% off Red Sea Liveaboard Scuba Scene in Spring 2025
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Embark on the ultimate diving adventure aboard the Scuba Scene, the luxury liveaboard offering an unforgettable Red Sea experience. Known for its exceptional service, safety, comfort, and world-class dive sites, Scuba Scene is the ideal choice for divers of all levels.
Dive into crystal-clear waters teeming with vibrant coral reefs, exotic marine life, and awe-inspiring shipwrecks. From the stunning Ras Mohammed National Park to the famous Thistlegorm wreck, Scuba Scene brings you to the heart of the Red Sea’s best sites. With spacious cabins, gourmet dining, and a dedicated crew that ensures every detail is perfect, this liveaboard guarantees relaxation and adventure in equal measure.
Now is the perfect time to book! Save a massive 35% on any sailing between 3rd March and 28th April 2025. Whether you’re a seasoned diver or taking your first plunge, Scuba Scene promises an experience you’ll cherish forever.
Don’t miss this chance to dive the Red Sea in style and at an incredible price. Book your adventure today!
Tel: 0800 699 0243
info@oysterdiving.com / www.oysterdiving.com / Oyster Diving Facebook / Oyster Diving Instagram
Welcome to Day 4 of Scubaverse.com’s week-long Christmas Gift Guide!
Struggling to find the perfect gift for that special scuba diver in your life? Read on for Team Scubaverse’s pick of this season’s must-have Christmas gifts.
Every day this week, we are publishing a special Christmas Gift Guide full of different gift ideas that are all ideal for divers, so you’re sure to find something that’s perfect. Take a look at today’s selection below…
Thalassas Ocean-Inspired Apparel
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Dive into comfort and style with Thalassas! Featuring T-shirts, hats, leggings and more, each piece is designed to bring the tranquillity and beauty of the sea to your everyday life. Whether you’re lounging by the coast or exploring city streets, our gear has you covered.
Your purchase has a purpose! A portion of every sale supports beach cleanup initiatives and organizations.
HOLIDAY BUNDLE PRICING STARTS NOVEMBER 18th!
This holiday season, we’re offering bundle discounts on our best-selling tees, hats, and leggings! Mix and match to create your perfect set – and enjoy savings when you buy more. It’s the perfect time to stock up on ocean vibes for yourself or the diver in your life.
🌊 Holiday Bundle Discounts: Save More When You Buy More! 🌊
Don’t miss out, these deals won’t last long! FREE SHIPPING on all orders in the USA.
support@thalassas.com / www.thalassas.com / Thalassas Facebook / Thalassas Instagram / Thalassas tiktok
XDEEP Navy Signature Hoodie
info@nautilus.uk / XDEEP on nautilus.uk / www.xdeep.eu / XDEEP on Facebook
The long-awaited XDEEP Signature hoodie is finally available! Apart from being super-trendy, it’s also quality stuff: made in EU of 100% premium cotton with solid japan-made YKK metal zippers.
The main features of this stylish hoodie are the following:
– 100% cotton
– Strong metal zipper
– High-quality print
– Made in EU
Furthermore, all XDEEP hoodies and t-shirts (including fabric) are manufactured in EU using top quality 100% cotton.
The XDEEP Signature Hoodie is perfect for keeping warm and looking trendy at the same time.
To find out more about XDEEP products, visit www.xdeep.eu.
Nautilus are the distributor for XDEEP and other leading dive equipment brands in the UK. Find out more about Nautilus brands at nautilus.uk/our-brands.
info@nautilus.uk / Buy in the UK / www.xdeep.eu / XDEEP on Facebook
Oceanarium Regulator Bags & Octo Holders
sales@miflexhoses.co.uk / www.miflexhoseshop.co.uk / miflexhoseshop.co.uk/acatalog/Oceanarium.html / Miflex Hoses on Facebook
Oceanarium products offer great gifts for all lovers of life underwater, including unique designs of regulator bags, octopus holders, gear tags & cloak towels.
This range brings fun & enjoyment to your dive making your kit distinctive.
Check out the very popular regulator bags available in 6 designs, including the Oceanarium Whaleshark design, as well as the two new designs of Octopus Holders; Pygmy Seahorse & Jellyfish.
Buy a Christmas gift for a friend and make them smile… Diving is Fun!
sales@miflexhoses.co.uk / www.miflexhoseshop.co.uk / miflexhoseshop.co.uk/acatalog/Oceanarium.html / Miflex Hoses on Facebook
Fourth Element Pelagic Dive Watch
info@fourthelement.com / fourthelement.com / Fourth Element Facebook / Fourth Element Instagram / Fourth Element tiktok / Fourth Element YouTube
The Pelagic dive watch from fourth element combines British design with Swiss-craftmanship in a hand-built automatic watch which captures the essence of classic scuba-diving timepieces.
Named after the vast reaches of the open ocean, the Pelagic combines exceptional craftmanship with high-specification engineering. Designed in the UK and hand-built in Switzerland, it is rated to a depth of 500m. The Pelagic features a stunning automatic movement, seen through the sapphire crystal glass case back, powered by a Swiss made precision self-winding movement. This is a watch suitable for the most extreme environments on Planet Earth.
The Pelagic has a brushed stainless-steel case with the choice of 22mm silicone/rubber strap or stainless-steel bracelet. It features a helium escape valve, positioned at 9 o’clock ensuring that this watch is even equipped for saturation diving. The watch features a unidirectional black ceramic bezel, allowing maximum dive times to be planned, luminous hands and markers and date function.
Design detailing includes ‘fourth element’ engraved on the rotor, buckle (on the silicon/rubber strap version) or clasp (on the brushed stainless-steel version). The crown features the fourth element icon representing the four elements earth, air fire and water.
The Pelagic watch is packaged using only recycled materials (recycled PET) and FSC certified paper and card, demonstrating fourth element’s continued commitment to its OceanPositive mission.
TECHNICAL SPECIFICATION
– Movement: 26 Jewel Swiss Sellita SW200 automatic with hacking function
– Water resistance: 500m / 1640ft
– Helium escape valve: 9 o’clock
– Crown: screw down locking
– Case width: 44mm
– Case thickness: 14mm
– Shatter and scratch resistant sapphire crystal
– Lug to lug: 52mm
– Case material: 316l brushed stainless steel
– Bezel: 120-click unidirectional with black ceramic insert
– Swiss Super-LumiNova C3 on markers and hands
– Strap: 22mm silicone/rubber strap or brushed stainless steel bracelet
– Warranty: 2 years
– Swiss made
RRP: GBP £1475 / USD $1975 / EUR €1795 / AUD $2950 / CAD $2595
info@fourthelement.com / fourthelement.com / Fourth Element Facebook / Fourth Element Instagram / Fourth Element tiktok / Fourth Element YouTube
Nautilus Seascape Mask & Clamshell Case
info@nautilus.uk / nautilus.uk / Seascape Mask on nautilus.uk / Nautilus on Facebook
The Nautilus Seascape single lens mask builds on the experience of proven design with the latest technology.
The ultra soft liquid silicone skirt and strap ensure this frameless mask gives the best fit whilst ensuring a wide 120 degree field of vision.
The antislip buckles means the strap stays where set it and the ultra clear, high vision tempered glass means virtually all light passes through to your eyes.
A substantial nose pocket means that equalising is a joy and that, combined with comfort, makes this the ideal mask for most divers.
To find your nearest Nautilus dealer, click here.
info@nautilus.uk / nautilus.uk / Seascape Mask on nautilus.uk / Nautilus on Facebook
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