News
67% of sharks are contaminated with plastic
A study from the University of Exeter published last week in the journal Scientific Reports shows that 67% of 46 sharks analysed contained microplastics and other man-made fibre in their digestive system. Scientists studied four species of demersal sharks that live near the seabed off the UK coast. A total of 379 particles were found and, though the impact on the sharks’ health is unknown, the researchers say it highlights the “pervasive nature of plastic pollution.”
In response to the study, Will McCallum, head of Oceans for Greenpeace UK said:
“Our addiction to plastics combined with the lack of mechanisms to protect our oceans is suffocating marine life. Sharks sit on top of the marine food web and play a vital role in ocean ecosystems. Yet, they are completely exposed to pollutants and other human impactful activities. We need to stop producing so much plastic and create a network of ocean sanctuaries to give wildlife space to recover. The ocean is not our dump, marine life deserves better than plastic.”
Lesser spotted dogfish caught as bycatch – credit Kristian Parton
Greenpeace USA Oceans Campaign Director John Hocevar added:
“In recent weeks we have learned more about how badly we have saturated our air, water, and soil with plastic, to the point where there is likely to be bits of plastic in most fruits and vegetables. Mass use of throwaway plastic has also contaminated our oceans, to the point where two-thirds of sharks sampled had plastic in their stomachs. Sharks play a critical role in maintaining a balance to marine ecosystems, but many shark species are at risk due to industrial fishing. It is hard to see how we can protect sharks if we seem unwilling even to protect ourselves. Eliminating single-use plastic is one of the most straightforward steps we can take to improve the health of our oceans and our communities.”
For more information about Greenpeace visit their website by clicking here.
Shells of the World: A Natural History by M.G. Harasewych
Shells of the world is a guide to the world of marine, shelled molluscs. And what a varied and interesting world it is. Some of my favourite things to find on a dive are detailed in this book, including disco clams (or Electric File Clams as they are correctly names), the cephalopods, giant clams and sea hares. There are also many on my wish list, top of which is the Nautilus.
Each chapter provides a detailed description of the species, along with beautiful images. You can dive deeper and discover where they live, both with global distribution and the habitat they prefer. Learn about their diet, reproduction and diversity.
Having dipped in and out of this lovely book over the past few weeks, it has inspired me to learn more about this group of animals that we see on most divers, wherever we are in the world. Some of the shells are incredibly intricate and beautiful. I have always agreed with never collecting, or touching, marine life. The description of a certain set of cone shells should be a warning to those that are happy to pick up marine life! One of the cone shells has a local name called the cigarette snail. Why? Because once the venom is in your system from this animal, you only have time to smoke one cigarette before the affects of the venom are fatal!
What the publisher says:
Mollusks are invertebrate animals with a remarkable natural history and a rich fossil record, and their shells are prized for their breathtaking variety and exquisite beauty. Shells of the World provides a wide-ranging look at the incredible diversity of marine mollusks. An informative introduction outlines the lineages covered, followed by a directory section, split into classes, that profiles a broad selection of different taxa to give a sense of their sheer numbers and variety.
- Features hundreds of beautiful color photos, depicting both the live animals and their shells
- Discusses mollusk evolution, anatomy, life cycles, behavior, and ecology
- Describes unique characteristics, distribution, habitat, and size
- Provides valuable insights into the conservation of the world’s marine mollusks
- Ideal for malacologists and shell collectors everywhere
About the Author:
M. G. Harasewych is research zoologist emeritus and former curator in the Department of Invertebrate Zoology at the Smithsonian Institution’s National Museum of Natural History. A fellow of the American Association for the Advancement of Science, he is the author (with Fabio Moretzsohn) of The Book of Shells: A Life-Size Guide to Identifying and Classifying Six Hundred Seashells.
Book Details
Publisher: Princeton University Press
Hardcover
Price: £25
ISBN: 9780691248271
Published: 9th April, 2024
Stahlsac dive bags and travel luggage are built for our community of divers, surfers, kayakers and outdoor explorers who need bags that are constructed with durability, toughness, and 
the highest quality the industry has ever seen. We were founded by one man determined to build better watersports and dive bags, and today, that mission is carried on by many. Adventure doesn’t just present itself; it requires discovery. When we design dive bags, we make sure they are tough enough for you to explore in all conditions—warm and cold, wet and dry—to the nearest and farthest reaches of the earth. And for those times you want to push the boundaries of adventure, Stahlsac dive bags make sure you can truly GO ANYWHERE.
Abyss Duffels
Made to be your partner-in-crime on every adventure, Stahlsac’s Abyss Duffels protects your gear from Mother Nature’s worst. Tough and 100% waterproof with double-TPU nylon material that shrugs off daily wear-and-tear, and RF-welded seams further boost the bag’s potential for lifelong exploring. Get Wet. Get Lost. Go Anywhere with Abyss.
- A weatherproof duffel for trips, travel, and adventure
- Ultra-durable double-TPU nylon protects your gear
- Material repels water and keeps your equipment dry
- RF-welded seams are flush, tough, and waterproof
- Removable straps transform duffel into backpack
- Zippered internal stow compartments carry essentials
- External zippered flap is easy to open and close
- Welded external handles make transporting a breeze
Panama Mesh Backpack
The most copied design in scuba diving, the Stahlsac Panama Mesh Backpack is the “original” design and features two high-density foam padded shoulder straps, extra durable polyester mesh, duffel bag handles and our unique zippered dry pocket inside that combines with a wet pocket outside. The bottom’s built from reinforced 18-gauge PVC nylon to combat the wear and tear of your active coastal lifestyle, and, as a bonus in every bag, we supply a 12″ x 12″ mesh drawstring satchel for extra stowing utility. Pack up your beach kit and go.
- Density foam padded shoulder straps
- Outside wet/dry pockets
- 2 Carry handles
- Tough, snag-resistant polyester mesh
- Reinforced PVC bottom
For more information about Stahlsac bags, visit www.stahlsac.com/dive-bags.
Sea & Sea is the home of Stahlsac and other leading diving brands in the UK.
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