Marine Life & Conservation
Micro plastics ‘pose toxic threat to marine biodiversity’

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
Make Every Dive Count

The Shark Trust Great Shark Snapshot is back for its 4th year! And this time the Shark Trust are asking you to Make Every Dive Count!
The last week of July will see the return of the Shark Trust’s citizen science initiative: The Great Shark Snapshot. It encourages divers and snorkellers, all around the world, to record the sharks and rays that they see. This year it takes place between the 19th and 27th July. Get ready to dive in!
The event is back for its 4th year, and it is happening in “Shark Month”, more commonly known as July! To coincide with a series of events that celebrate all things shark and ray, including Shark Week and the 50th anniversary of Jaws.
Divers, clubs, centres, charter boats and liveaboards are all encouraged to show their support by organising dives and events throughout the week. As well as gathering vital data, the event will provide a chance to celebrate the incredible shark and ray species that live in our ocean.
Information about the species and numbers of sharks and rays the participants find over the week will be added to the Shark Trust’s Shark Log. This global shark census will, over time, allow shark scientists to build a picture of species distribution and any changes that occur
Caroline Robertson-Brown, Marketing Manager at the Shark Trust said “It is great to see this popular citizen science event back for its 4th year. We are asking divers to Make Every Dive Count this year. To identify. Count and Record every shark, ray and eggcase they see during the week-long event. To organise dives especially to take part. Whether you are diving your local dive site, or on a trip of a lifetime, we want divers to join in on the Great Shark Snapshot in July.”
It is easy to join in. Just go diving between 19th and 27th July and record every shark, ray, skate or eggcase that you and your dive group sees. If possible, take photos and some video footage too. Then make sure that you record your sightings on the Shark Trust Shark Log recordings website or by using the Shark Trust app.
This year we have created a digital guide that puts all the information you need in one handy online guide. Which can be downloaded from the website.
The Great Shark Snapshot is a way for divers to get together, go diving, and do something to help shark conservation. Why not dive in?
Find out more here: www.sharktrust.org/snapshot
Blogs
The Ocean Cleanup Launches 30 Cities Program to Cut Ocean Plastic Pollution from Rivers by One Third by 2030

The Ocean Cleanup, the international non-profit with the mission to rid the world’s oceans of plastic, has announced, at the UN Ocean Conference (UNOC), its plan to rapidly expand its work to intercept and remove ocean-bound plastic pollution.
The 30 Cities Program will scale the organization’s proven Interceptor™ solutions across 30 key cities in Asia and the Americas, aiming to eliminate up to one third of all plastic flowing from the world’s rivers into the ocean before the end of the decade.
This evolution follows five years of learning through pioneering deployments across 20 of the world’s most polluting rivers and represents a key next step in the organization’s mission and the global fight against ocean plastic pollution.
With the 30 Cities Program, The Ocean Cleanup will transition from single river deployments to citywide solutions, tackling the main plastic emitting waterways within each selected city. This follows a key learning from deployments in Kingston, Jamaica, which showed it is possible to scale faster when projects encompass whole cities, as the same set of partners can be involved with all deployments.
To date, The Ocean Cleanup has already prevented 29 million kilograms of trash from reaching the ocean. The organization currently intercepts an estimated 1–3 percent of global river-borne plastic emissions. With the first 20 river deployments close to being fully operational, it is now poised to reduce the plastic pollution flowing into the ocean from rivers by up to a third.
“When we take on an entire city, instead of individual rivers, we can scale faster, reduce costs, and maximize impact,” said Boyan Slat, Founder and CEO of The Ocean Cleanup. “Our analysis shows that strategically deploying Interceptors across just 30 carefully chosen cities can stop up to a third of river plastic pollution worldwide. This is the next big leap toward our ultimate goal of a 90 percent reduction in global ocean plastic pollution.”
City-by-city: a Faster Path to Scaling
Using the latest scientific modeling and on the ground experience, The Ocean Cleanup identified 30 major plastic polluting coastal cities which include:
• Panama City, Panama – First deployment to go live in the coming months.
• Mumbai, India – Mapping of all waterways completed; preparations for first deployments underway.
Furthermore, the organization is developing plans to expand on its existing work to all polluting rivers in:
• Manila, Philippines; Montego Bay, Jamaica; Jakarta, Indonesia; Kuala Lumpur, Malaysia; Bangkok, Thailand and Los Angeles, U.S.A.
Other cities will be announced once the necessary partnerships and agreements are in place. Planning and fundraising activities are underway for all 30 cities. To realize these ambitious plans, the organization is currently also expanding its engineering and operational capacity.
Data Driven Restoration at Scale
Before Interceptors are deployed, each city project begins with an intensive analysis phase. Aerial drones, AI-powered image analysis, and GPS-tagged “dummy” plastics are used to chart every visible waterway and track how waste moves from streets to sea. These real-time insights guide optimal Interceptor placement and provide a public baseline against which progress can be measured.
Alongside intercepting new plastic, the 30 Cities Program will also remove debris from nearby coasts, mangroves, and coral reefs. This twin-track approach—shutting off the tap while clearing the legacy pollution—enables The Ocean Cleanup to achieve long-term impact, which includes the restoration of fish nursery habitats, boosting coastal tourism, and strengthening of natural storm surge defenses for local communities. Alongside local partners, the organization also advocates for improvements in waste management and awareness raising amongst communities.
Completing the First 20 Rivers
While laying the foundation for the 30 Cities Program, The Ocean Cleanup is also nearing completion of its first 20 river projects. The next landmark achievement—expected as soon as the second half of this year—is in the western Caribbean, where the team aims to resolve the plastic pollution problem in the Gulf of Honduras by intercepting the trash feeding into this body of water.
A Stepping Stone Toward a 90 Percent Reduction
The 30 Cities Program represents the first major scaling step in The Ocean Cleanup’s journey to eliminate 90 percent of floating ocean plastic pollution. In parallel, efforts are continuing to remove plastic from the Great Pacific Garbage Patch. Whilst extraction operations are currently on hiatus, work to deploy cutting edge technologies to map the “hotspots”, or areas of intense plastic accumulation, in order to make future extractions more efficient and economical, is ongoing.
By combining river interception and coastal cleanup with its offshore cleanup systems targeting legacy pollution that’s already in the ocean, the organization is charting a path to turn off the tap and mop up the mess.
About The Ocean Cleanup
The Ocean Cleanup is a nonprofit organization that develops and scales technologies to rid the oceans of plastic. By conducting extensive research, engineering scalable solutions, and partnering with governments, industry, and like-minded organizations, The Ocean Cleanup is working to stop plastic inflow via rivers and remove legacy plastic already polluting the oceans. As of June 2025, the non-profit has collected over 28 million kilograms (62 million pounds) of trash from aquatic ecosystems around the world. Founded in 2013 by Boyan Slat, The Ocean Cleanup now employs a multi-disciplined team of approximately 200 people. The organization is headquartered in Rotterdam, the Netherlands, with international operations in 10 countries. For more information, visit www.theoceancleanup.com.
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