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Researchers deploying a suction-cup tag on a blue whale in California
Researchers deploying a suction-cup tag on a blue whale in California

Baleen whales eat more than previously thought

How much do baleen whales eat every day?

Researchers have discovered that baleen whales actually eat an average of three times more food than previously thought. This in turn means that we have been underestimating their impact  and contribution to ocean’s ecosystems.

This finding was shared in a paper in a recent issue of the Nature journal.

Winners of the 2021 CMAS World Championship of Underwater Photography & Video

Creative Category 1st Place: Eser Pasa and Tolga Pat, Turkey
Creative Category 1st Place: Eser Pasa and Tolga Pat, Turkey

The tiny charming and picturesque island of Porto Santo—the northernmost and easternmost island of the Portuguese archipelago of Madeira, located in the Atlantic Ocean—played host to the CMAS World Championship of Underwater Photography and Video, which took place on 4-9 October 2021. This biannual event was now in its eighteenth year and had attracted 48 teams from 18 countries, each competing for national and individual glory.

Scientists are 3D printing calcium carbonate surfaces that corals can grow on.
Scientists are 3D printing calcium carbonate surfaces that corals can grow on.

Using 3D printing to restore coral reefs

A team of scientists at the King Abdullah University of Science and Technology are applying innovative approaches to 3D printing solutions in a bid to restore depleted coral reefs.

Instead of using synthetic or hybrid materials, they have developed a new approach called 3D CoraPrint, which uses an eco-friendly and sustainable calcium carbonate photo-initiated (CCP) ink that they also developed.

In the colonization process, coral microfragments are attached to a printed skeleton. There are two methods used, and both start with a scanned model of the coral skeleton.

Screenshot. DecoPlanner's Interface with simulation of a simple open circuit dive

DecoPlanner version 4 released

Modern dive computers are fantastic tools, which are getting still easier to use, with clear and nicely designed interfaces that are easy to read and intuitive to use. Many of the later models are also great-looking wearable tech and sleek enough to pass for a fancy wristwatch. But wouldn’t it sometimes be nice to have a closer look at what is behind those shifting digits and the mechanics of decompression calculations?

Enter decompression software, such as DecoPlanner, which provides the user with precisely such a window into how dive profiles and decompression are calculated.

Reunion Island: Jewel of the Southern Indian Ocean

Soldierfish under an overhang at Tahiti, Réunion Island. Photo by Pierre Constant
Soldierfish under an overhang at Tahiti, Réunion Island. Photo by Pierre Constant

Elliptical in shape, Reunion Island is located in the southern Indian Ocean, 800km east of Madagascar as the crow flies, and 200km west-south-west of Mauritius Island. With a surface of 2,512 sq km and a perimeter of 207km, it is the emerged tip of a volcanic mound that rose 7,000m above the ocean floor. Pierre Constant shares his adventure to this exotic and remote island.

Malaysia International Dive Show is going to kick-start their event by holding a local market in December

Malaysia International Dive Expo (MIDE) is back!

Our focus will be on reconnecting Malaysian dive businesses with our local dive community, stimulating the interest of fellow underwater enthusiasts to visit the many local dive destinations around Malaysia, writes Ness Puvaness, the show's organiser. 

As such, the theme this year will be ‘Let’s Meet & Dive Locally’.

Poseidon Reef App Launch

Plan

Plan your next diving adventure in the simple to use, easy to navigate interactive planner. Diving an open circuit or rebreather? Doesn't matter. The app has different dive modes and deco models available to match your setup and preferences regardless of level.

Choose between single dives or a series of dives and let the app calculate needed technical stops. Easily tune the gradient factors to see the difference in dive time and get a summary of the result as well as a detailed list of run time and gas switches if applicable.

JoAnn Zigahn 1947 - 2021

Joann passed quietly on October 25th, 2021 after an untimely illness.
JoAnn had a love for the fashion industry where she had her first work experience. While working in the fashion industry, JoAnn met and married Armand “Zig” Zigahn. Zig was the founder of Beneath the Sea. Soon JoAnn realized she had married both Zig and Beneath the Sea. It was a marriage and a love affair that lasted for the next thirty-eight years.

DAN at DEMA Show 2021

DURHAM, NC – October 26, 2021 – For more than 40 years DAN has played a crucial role in the dive industry, championing diver safety, risk management, and emergency preparedness.

After last year’s virtual DEMA Show, we at DAN are looking forward to meeting with dive professionals from around the world in person once again.