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Marine Life & Conservation

Micro plastics ‘pose toxic threat to marine biodiversity’

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Tiny particles of waste plastic that are ingested by shoreline “eco-engineer” worms may be negatively affecting biodiversity, a study says.

So-called microplastics may be able to transfer toxic pollutants and chemicals into the guts of lugworms, reducing the animals’ functions.

An estimated 150 million tonnes vanishes from the global waste-stream each year.

The findings have been published in the academic journal Current Biology.

“We are losing a large volume of plastic and we know it is going into the environment and the assumption being made by policymakers is that this material is non-hazardous, it has got the same ranking as scraps of food,” explained co-author Mark Browne, an ecologist from the US-based National Center for Ecological Analysis and Synthesis.

“The research we have done really challenges that,” Dr Browne added, referring to the findings of lab work carried out by colleagues at Plymouth University, UK, led by co-author Prof Richard Thompson.

“Our findings show that the plastic itself can be a problem and can affect organisms.

“Also, when particles of plastic go into the environment what you find is that they accumulate large quantities of pollutants that are banned. So you have these particles themselves but also a load of nasty chemicals.”

The team found that the tiny bits of plastic, which measure 1mm or smaller, transferred pollutants and additive chemicals – such as flame-retardants – into the guts of lugworms (Arenicola marina).

This process results in the chemical reaching the creatures’ tissue, causing a range of biological effects such as thermal stress and the inability to consume as much sediment.

Dr Browne explained that this had consequences for the surrounding ecosystem.

“If the animals are not able to eat as much then there is a change in the function of the organisms and there is an impact on the semblance of the species found in an area,” he said.

He added that the worms had earned the nickname “eco-engineers” as a result of their ability to eat organic matter from the sediment and prevent the build-up of silt.

“Through that process, it produces burrows and changes the whole assemblage of animals that live around it,” Dr Browne observed.

“This is quite considerable because if you look at the total biomass of a shoreline, about 32% can be made up from these organisms.”

He told BBC News that it was the first study of its kind to highlight the toxic risk posed by microplastics to marine organisms.

“For about 40 or 50 yeara, we have been finding very large concentrations of chemicals in animals. Then they started to find animals with larger concentrations of pollutants and plastics, so researchers began to establish this correlation.

“But no-one had actually shown whether chemicals could transfer from plastic when they are eaten by animals and accumulate in their bodies and reduce important functions that maintain their health.”

 

Source: www.bbc.co.uk/news

Marine Life & Conservation

Dive with a Purpose: Shark Guardian’s Expedition Galapagos

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Shark Guardian has just unveiled their largest and most exciting expedition yet: a seven-night, eight-day adventure in August 2026 aboard the Galaxy Diver II, a state-of-the-art
vessel specifically designed for divers exploring the enchanting waters of the Galapagos
Islands. This is a once in a lifetime opportunity to engage deeply with marine
conservation in one of the world’s most revered diving destinations.

Shark Guardian is a UK registered charity dedicated to protecting sharks and marine
ecosystems worldwide. Founded by marine biologists and conservationists, Brendon
Sing and Liz Ward-Sing, Shark Guardian leads educational programs, research projects,
campaigns and expeditions aimed at fostering a better understanding and respect for
marine life. Their work spans several continents and focuses on direct action,
education, and advocacy.

Shark Guardian’s ethos revolves around the concept of “diving with a purpose.” This
philosophy underscores the importance of not just experiencing the wonders of the
underwater world but actively learning and contributing to its preservation. Participants
in Shark Guardian expeditions engage in citizen science projects, which involve
collecting data that supports ongoing research and conservation efforts. These
activities empower divers to make a tangible difference, turning each dive into an act of
conservation.

One of the newer additions to the Galapagos diving scene, the Galaxy Diver II, is
specifically tailored for divers. Its design prioritises comfort, safety, and environmental
responsibility. The vessel boasts modern amenities, spacious dive decks, and the latest
navigational technology, ensuring that every dive is not only memorable but also has
minimal environmental impact.

A highlight of this expedition is the opportunity to dive at Wolf and Darwin islands,
renowned for their vibrant, untouched marine ecosystems and as a haven for large
pelagic species. These islands are famous for their schools of hammerhead sharks,
whale sharks, and manta rays, offering spectacular diving that attracts enthusiasts from
around the globe.

Shark Guardian have developed this trip to ensure a hassle-free experience. The
expedition package also includes internal flights from Quito, Ecuador, to the Galapagos,
plus accommodation in Quito before and after the trip. This allows divers to relax and
enjoy the experience without worrying about logistics.

Participants will join a diverse group of passionate divers and conservationists. This trip
offers a unique opportunity to network with like-minded individuals who are eager to
learn about and contribute to marine conservation. It’s a chance to share experiences,
knowledge, and a commitment to protecting the marine world.

sharks

Shark Guardian is offering an early bird price available until May 31st 2024. This special
rate provides a fantastic opportunity to secure a spot on this exclusive expedition at a
reduced cost. Availability is limited, so interested divers are encouraged to act quickly
to ensure they don’t miss out. All the details can be found on their WeTravel page, where
bookings can be made easily and payment instalments are available.

Expedition Galapagos, aboard the Galaxy Diver II offers more than just a diving
holiday—it is an investment in both personal and planetary well-being. By participating,
divers not only witness the majesty of one of the world’s premier diving locales but also
contribute to its preservation for future generations.

Find out more about Shark Guardian at www.sharkguardian.org.

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Marine Life & Conservation

Shark Trust Launches New Podcast

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shark trust

The Shark Trust has launched their new podcast. Delve behind the scenes and gain exclusive insights in the world of shark and ray conservation on The Shark Trust Podcast. Out Now!

Join the Shark Trust on this journey as they explore the diverse world of sharks. Hear from experts from different backgrounds and learn how you can become a part of the global effort to protect these vital species.

Whether you’re a seasoned shark expert or just dipping your toes beneath the surface, this podcast offers something for everyone!

shark trust

In the first series you will hear from the Shark Trust team. Shark Trust Patrons, Monty Halls, Miranda Krestovnikoff and Simon Rogerson. Divers with a passion for sharks. And some of the Oceanic 31 artists.

New episodes released every two weeks on all major podcast platforms and watch full video versions on the Shark Trust YouTube Channel. Keep your eyes peeled for the bonus minisodes!

There are two available to dive into right now!

Episode 1: Dive beneath the waves of shark and ray conservation with Mark as he speaks with Paul Cox, CEO of the Shark Trust. Paul and Mark discuss the threats and difficulties that sharks and rays currently face in the modern world. And how the Shark Trust is working to create a better future for them!

Bonus Minisode: Join Mark at Go Diving, the UK’s biggest dive show. He interviews Shark Trust Patron, Simon Rogerson, about his diving experiences and how seeing sharks can transform your life!

For more information about the work of the Shark Trust, visit their website here.

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Experience the Red Sea in May with Bella Eriny Liveaboard! As the weather warms up, there’s no better time to dive into the crystal clear waters of the Red Sea. Join us on Bella Eriny, your premier choice for Red Sea liveaboards, this May for an unforgettable underwater adventure. Explore vibrant marine life and stunning coral reefs Enjoy comfortable accommodation in our spacious cabins Savor delicious meals prepared by our onboard chef Benefit from the expertise of our professional dive guides Visit our website for more information and to secure your spot: www.scubatravel.com/BellaEriny or call 01483 411590 More Less

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