Marine Life & Conservation
New River Thames ‘source to sea’ pollution data finds majority of litter found is single-use
Over 60% of litter would disappear from Thames basin if we moved away from single-use items say the Marine Conservation Society and Thames21
A series of river cleans along the Thames and its tributaries has revealed that more than 80% of litter found in the Thames, and 78% on its tributaries, was made up of single-use items such as metal drink cans, food packaging and plastic drinks bottles.
The events were run by the Marine Conservation Society (MCS) and waterways charity Thames21 as part of the Waitrose & Partners/MCS beach and river clean programme. The analysis also gives a snapshot of the source to sea pathway for litter and the way it breaks down over time.
Thames21 ran 20 river clean events towards the end of 2017 and into 2018 at Thames tributaries and tidal Thames sites. The evidence was compared to MCS beach litter data from four beach cleans at Southend-on-Sea.Depending on which part of the Thames the cleans-up took place, different items predominated. Metal drinks bottles were commonly found on the tributaries, but fewer were found on the Thames foreshore. Wet wipes were found in huge numbers during the clean-ups on the Thames foreshore, whilst glass and unrecognisable plastic litter dominated at the estuary cleans.The concentration of litter items found per 100m rose as the Thames made its way towards the sea, due to the increased opportunity for humans to influence the ecosystem.
16 events took place at Thames tributaries including the river Lea in Hackney, the Bear Brook in Aylesbury, and the river Brent in Neasden. On the tributaries, volunteers found that 78% of the items they picked up were single-use with an average of 219 pieces of rubbish collected for every 100m surveyed. The four events on the Thames Foreshore found that 86% of the litter items recorded were single-use with a higher concentration of items found – an average of 1,402 per every 100m surveyed.
At Southend-on-Sea, where the Thames meets the sea, just under half of all items found (48%) were recognisably single use, but the concentration of small pieces of litter increased further, with a huge 2,520 items per every 100m surveyed.
Of those 2,520 items, 560 (28%) were unrecognisable, small plastic items. Lauren Eyles, MCS Beachwatch Manager, says that the proportion of single use plastic was harder to measure at estuary and coastal sites as the plastic has already broken down: “We find much more unidentified, tiny plastic at these sites because the plastic has been floating around for some time. However, they may well have once been single-use. Beach cleaners are far more likely to find microplastics these days than larger identifiable items.”
Both MCS and Thames21 are calling for a Deposit Return Scheme which has been shown to cut not just plastic pollution but from other materials too such as metal and glass.
‘These findings clearly show that we urgently need a Deposit Return Scheme, as well as alternatives to single-use,’ said Debbie Leach, CEO of Thames21. ‘Eighty per cent of the waste we found on the Thames foreshore, and nearly the same amount on the tributaries would disappear if we moved away from single-use items; and one way to do this is through a DRS.’
The urgent problem of wet wipes, which often contain plastic, was also revealed in the report – making up 77 per cent of all items removed on the tidal Thames foreshore, and an average of 1,000 at the 4 cleans that took place.
Lauren Eyles says the data from these cleans will give the charity a more complete picture of the source to sea journey of litter: “Rivers are being harmed by a variety of different pollutants, including large amounts of plastic. Eighty per cent of ocean litter comes from land, channelled there by our rivers.”
Tor Harris, Head of CSR, Health & Agriculture for Waitrose & Partners, said: “The marine and river environment is important to all of us which is why we we’re delighted to have partnered with MCS for their ‘Source to Sea’ programme. The evidence will help us, and others, focus on reducing pollution from materials such as plastics. Our customers are very engaged in the issue of plastic pollution, so initiatives like this help both customers and Partners get actively involved in addressing the problem and finding alternatives to single-use plastic.”
Visit www.mcsuk.org to find out more.
Marine Life & Conservation
Paul Watson Released as Denmark Blocks Japan’s Extradition Bid
Renowned anti-whaling activist Paul Watson has been released from custody in Greenland after spending five months in detention. Denmark’s Justice Ministry rejected Japan’s request for his extradition, citing insufficient guarantees that his time already served in custody would be credited against any potential sentence.
The 74-year-old Canadian-American was arrested on July 21 in Nuuk, Greenland’s capital, when his ship docked to refuel. His arrest was based on a 2012 Japanese warrant related to a 2010 encounter in Antarctic waters. Japan alleged Watson obstructed operations and caused damage to a whaling research ship during efforts to disrupt illegal whaling. Watson has consistently denied these claims, maintaining his commitment to marine conservation.
Denmark, which oversees extradition matters for Greenland, concluded that while the legal conditions for extradition were met, the lack of assurances from Japan regarding time-served credit made extradition untenable.
In a video shared by his foundation, Watson expressed gratitude and relief, saying, “After five months, it’s good to be out… and good to know they’re not sending me to Japan.” He added that the most difficult part of his time in custody was being separated from his two young sons.
Watson is a pioneering figure in marine conservation, known for founding the Captain Paul Watson Foundation in 2022 after decades of activism with the Sea Shepherd Conservation Society. His bold efforts to defend marine life have earned him widespread support, including from celebrities and conservationists. His work has also been featured in the acclaimed reality TV series Whale Wars.
Watson’s lawyer, Jonas Christoffersen, praised the decision, stating, “We are happy and relieved that Paul Watson is now free.” He added that Watson is eager to reunite with his family and continue his vital work.
The arrest occurred while Watson’s vessel, the M/Y John Paul DeJoria, was en route to the North Pacific with a team of 26 volunteers to intercept a Japanese whaling ship. His foundation described the arrest as politically motivated and emphasized that Watson’s actions were focused on ending illegal whaling practices.
Japan resumed commercial whaling in 2019 after leaving the International Whaling Commission, asserting that whale meat is a cultural tradition. Conservationists, however, continue to challenge these practices, highlighting their impact on marine ecosystems.
Despite the challenges, Watson remains steadfast in his mission to protect marine life and bring attention to whaling practices. His dedication to ocean conservation has made him a globally respected advocate for the environment.
Marine Life & Conservation
12 Days of Zero-Waste Fish-mas
This holiday period, the Marine Conservation Society, the UK’s leading ocean membership charity, invites you to make some simple changes to eating fish this Christmas to help our seas.
Dr Kenneth Bodles, Head of Fisheries and Aquaculture at the Marine Conservation Society, said, “During the festive season, our consumption increases, but so does waste. Sustainability isn’t just about where food comes from – it’s also about how you use it. By reducing waste and making the most out of your seafood, you’re not only taking steps to be more ocean-friendly, but can also help to cut costs during what is often one of the most expensive times of the year”.
The Marine Conservation Society has compiled twelve tips on how to consume seafood sustainably with zero-waste this Christmas:
Buy whole fish instead of fillets
Instead of fillets, consider buying whole fish such as salmon, hake, or lemon sole. By adopting a “nose to tail” approach with cooking, whole-baked fish not only feeds a crowd, but also helps to minimise waste and maximise sustainability by using up every part of the animal, including bones, skin, and fat.
Make fish stock
Leftover fish bones or shells can be put to good use by boiling them to make a nourishing fish stock or bisque. This can be frozen and preserved for later use and makes for a flavourful base in a soup.
Make your own fish pâté
Avoid waste by turning leftover fish, such as smoked mackerel or salmon, into a delicious pâté by blending with cream cheese and lemon. Perfect when paired with crackers.
The sustainability of salmon and mackerel varies depending on where and how it is caught or farmed. For more information on green-rated options, check the charity’s Good Fish Guide.
Buy frozen
By purchasing seafood that is frozen or vacuum-packed, this helps to reduce waste by extending the shelf life of your food.
Fish pie
If you’re wondering what to do with leftover cooked fish, why not opt for a classic fish pie with mashed potatoes, leeks, and a cheesy sauce? A sure crowd pleaser on Boxing Day.
Use the head
Don’t forget the fish head! The meat is incredibly tender and flavourful. The charity recommends a cod’s head curry or recreating Fallow’s renowned cod’s head in siracha butter.
By stretching your ingredients further, not only is this a more sustainable way to enjoy seafood, but also cost-effective by repurposing leftovers and cooking creatively.
Boxing Day brunch
Mix leftover kippers or smoked salmon with scrambled eggs for a tasty, zero-waste, Boxing Day brunch.
For best choice, make sure you buy kippers, or herring, from the North Sea and the North Irish Sea.
Zero-waste storage
A top tip from the Marine Conservation Society to avoid waste is freezing fish offcuts to save for future use.
Crisp up the skin
Even leftover fish skin can be turned into a quick savoury snack by crisping it up in an air fryer with a little olive oil and salt.
Anchovies two ways
Leftover anchovies can either be blended with butter to make a delicious anchovy butter or tossed into pasta for a hit of umami flavour.
The charity recommends opting for anchovies caught in the Bay of Biscay for best choice.
Fishcakes
For an easy, zero-waste meal, leftover seafood trimmings can be mixed with mash and fried in breadcrumbs to make fishcakes.
Pickled mussels
Try pickling mussels in 1:1 vinegar and water, with a dash of sugar for a sustainable, zero-waste snack that can be enjoyed well beyond the festive season.
Mussels farmed in the UK are a seafood superhero. Grown using low-impact methods and harvested by hand, they get all the food they need from the sea around them. This makes them one of the most sustainable, ocean-friendly, and cost-effective seafood options.
Players of People’s Postcode Lottery have raised £6.6M towards the Marine Conservation Society’s vital work in making seafood more sustainable.
Laura Chow, Head of Charities at People’s Postcode Lottery, said: “Fish is a festive favourite for many, but making sustainable choices when it comes to how we buy and eat seafood makes all the difference for our ocean. Support from players of People’s Postcode Lottery has helped the Marine Conservation Society further its sustainable seafood work, so that we can all enjoy healthier, better protected seas.”
The Marine Conservation Society encourages you to make sustainable seafood choices a year-round habit, not just for Christmas. To check how sustainable the seafood on your plate is, you can visit the charity’s Good Fish Guide. The Guide helps consumers and businesses identify the most sustainable seafood using a simple traffic light system, based on where and how species are caught or farmed. Green is the best choice, amber means improvements are needed, and red indicates fish to avoid buying.
Zero-waste gift idea
Why not embrace a zero-waste Christmas by gifting a membership to support marine conservation? It’s a meaningful, low-waste gift that helps protect our ocean for generations to come. Memberships start from as little as £5 a month – the price of a sandwich and drink from your local coffee shop.
Find the latest sustainable seafood advice for wild-caught and farmed seafood on the Good Fish Guide, downloadable to your phone from www.mcsuk.org/goodfishguide.
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