Extreme Temperature Diary- Friday November 14th, 2025/Main Topic: The Hidden Deforestation Beneath the Waves – Guy On Climate
Dear Diary. You have often heard me complain about deforestation in the Amazon and elsewhere around our planet. Uneducated, greedy companies and people keep cutting down way too many trees just adding to atmospheric carbon dioxide levels warming the Earth.
That process is obvious but what is happening under our oceans is not. Over the last few decades fishermen have developed deep sea trawling to greatly increase their catch. This process overturns portions of the ocean’s floor, greatly releasing trapped carbon such that it rises to the surface and gets released into the atmosphere.
Here are more details from euractivy.com:
The hidden deforestation beneath the waves | Euractiv
The hidden deforestation beneath the wavesTackling the carbon emissions of bottom trawling is a fast and effective way to forestall climate change while protecting our precious marine ecosystems. But despite the minimal returns, governments across Europe keep subsidising the practiceBy Enric Sala
 Fishing boats set sail for the East China Sea fishery for fishing and production in Zhoushan City, Zhejiang Province, China, on August 5, 2025. (Photo by Costfoto/NurPhoto via Getty Images)
This year’s climate COP is taking place in Belém, at the heart of the Amazon rainforest – one of the planet’s green lungs and a long-standing symbol of the climate fight. But the world needs to look beyond the forest, to the part of the planet that’s blue.
The destruction of the rainforest happens in plain sight. But bottom trawling – a practice in which heavy fishing nets are dragged across the ocean floor, dredging up carbon that’s long been stored in the seabed – is a kind of deforestation beneath the waves. Bottom trawling is invisible to us on land, but it has devastating effects on the climate and ecosystems. COP30 in Belém is the moment to finally take a stand against the practice.
Over the last two years, science has revealed the scale of the problem. Recent research found that between 55% and 60% of all trawling-induced carbon dioxide makes it into the atmosphere over seven to nine years. That means that, every year, bottom trawling releases 370 million metric tons of carbon dioxide into the atmosphere. That’s about as much as the entire United Kingdom emits annually, and double the annual emissions from fuel combustion of the entire global fishing fleet of about 4 million vessels.
And the damage isn’t just to the atmosphere. Between 40% and 45% of the carbon dioxide that bottom trawling dislodges from the seabed remains in the ocean, where it turns the water more acidic – harming marine plants and animals where the bottom trawling took place.
Economically, the picture is no better. Bottom trawling largely survives on public money. Despite the minimal returns, governments across Europe subsidise bottom trawling to the tune of €1.3 billion every year, a figure that is nearly equivalent to the value of the jobs the industry creates.
But bottom trawling is still a regular fishing practice – even in areas that are meant to be protected. A recent investigation by the conservation group Oceana found that, in 2024, more than 100 bottom trawling vessels spent some 17,000 hours fishing in six French “marine nature parks.” That’s equivalent to one vessel trawling nonstop, night and day, for nearly two years straight. Across Europe, more than 11% of marine areas are designated for protection, but only 2% actually have management plans in place. The rest remains vulnerable to trawling.
Public awareness about bottom trawling is finally catching up, galvanised by new research, reports, and powerful imagery. Earlier this year, a David Attenborough documentary, Ocean, revealed the horrors of bottom trawling on screen for the first time.
The footage is shocking, but despite the science and reporting, countries still don’t account for bottom trawling’s significant carbon emissions in their climate action plans. And that’s where we need to see change at COP30.
We’ve had promises and declarations. Now we need to follow through. Tackling the carbon emissions of bottom trawling is a fast and effective way to forestall climate change while protecting our precious marine ecosystems. If we act now, the benefits will be immediate. If we delay, the carbon emissions of today’s bottom trawling will continue to leak into the atmosphere for another decade at least.
Ahead of COP30, the world is already celebrating new and recent steps to protect more of our ocean, having recently ratified the High Seas Treaty that will allow for the establishment of marine reserves beyond national borders from early 2026. However, these celebrations must not be premature: Nations will still need to prioritise protection within their own waters and ensure that harmful activities like bottom trawling are banned. This will ensure that all of our marine protected areas are actual sanctuaries for marine life – not unregulated “paper parks.”
COP30 is our chance to make that commitment. The ocean has long been our climate’s quiet ally. It’s time we stood up for it in return.
Enric Sala is the founder of National Geographic Pristine Seas, which has helped establish 31 marine protected areas worldwide, covering more than 6.9 million square kilometres of ocean.
Nov 12, 2025
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Here are some “ET’s” recorded from around the planet the last couple of days, their consequences, and some extreme temperature outlooks, as well as any extreme precipitation reports
The cold snap made the headlines, but the warmth in the nation’s middle now will fly by the radar.
70 heat records in jeopardy today (record highs and record warm lows) with temps 20-30 degrees above normal.
A pleasant break before the winter chill sets in. — Jeff Berardelli (@weatherprof.bsky.social) 2025-11-14T13:56:02.024Z
In Ironic news: Iceland is freaking out about… checks notes…
Ice! 🧊
News at 11…
It’s funny. But there’s truth here.
The Atlantic circulation is in danger of collapse in the next couple of decades due to global warming, as per many new studies… 1/ — Jeff Berardelli (@weatherprof.bsky.social) 2025-11-14T16:44:30.232Z
"My plea to the #climate centrists is put that to society. Ditch the delusions around #overshoot. Get real about what’s at stake. Let’s have an actual debate about what people value... The tail doesn’t get to wag the dog: politics doesn’t get to trump the physics" — Dr. Aaron Thierry (@thierryaaron.bsky.social) 2025-11-14T10:34:16.811Z
In my latest post, yaleclimateconnections.org/2025/11/the-..., I discuss how the number of major Atlantic hurricanes has been increasing in recent decades, but landfalling mainland U.S. major hurricanes have no long-term trend — though landfalling major hurricanes outside the U.S. do. — Dr. Jeff Masters (@drjeffmasters.bsky.social) 2025-11-12T22:42:34.171Z
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Dramatic increase in conflicts over #water in 2024 compared to previous years.
pacinst.org/announcement... — Peter Gleick (@petergleick.bsky.social) 2025-11-14T03:53:16.654Z
“Investing in adaptation isn’t a luxury or an act of resignation. It’s a sober act of realism & responsibility”. Powerful article from @rupertread.bsky.social on the urgency & transformative potential of #climate adaptation👇 — Caroline Lucas (@carolinelucas.bsky.social) 2025-11-14T09:58:31.691Z
While everyone’s having fun laughing at the Coalition’s ‘climate policy’ Labor is munching popcorn and enjoying the complete lack of scrutiny of its failed ‘Safeguard Mechanism’.
If only tackling #climate change just required being better than the Coalition…
thepoint.com.au/news/2150 — Dr Richard Denniss (@richarddenniss.bsky.social) 2025-11-14T00:37:57.750Z
#auspol How bloody stupid is the Liberal Party? For o/s readers, a reminder: Australia's "Liberals" (in name only) are our GOP equivalent. 🙄
#climate #environment
Despondent Liberal moderates fear electoral oblivion in metropolitan seats after net zero scrapped — Robyn D (@koparafallskid.bsky.social) 2025-11-13T19:55:23.890Z
What was the weather like on your birthday? Now you can find out!
During the shutdown, I forced myself to stay agile in data science tech, like AWS, Google, and Open AI.
I made a notebook that gets weather for the day/location of your birth, using multiple NOAA sources.
github.com/jjrennie/bir... — Jared Rennie (@jjrennie.bsky.social) 2025-11-13T20:13:39.488Z
YES YES YESSSSS!!!!!!!
VICTORY!!!! 🤩💪🍾
#Climate #BeyondOil #ClimateLitigation
www.greenpeace.org/internationa... — Kaisa Kosonen (@kaisakosonen.bsky.social) 2025-11-14T18:30:05.415Z
Want to build a climate-ready home and community? Join me at the free virtual Calgary Climate Symposium (Nov 17-21) for practical, accessible solutions!
Everyone is welcome and you don’t have to be from Calgary or even from 🇨🇦. It doesn’t get any easier than this 😄
Register here ⬇️ — Katharine Hayhoe (@katharinehayhoe.com) 2025-11-13T21:38:28.212Z
Great review by @audiofilemagazine.bsky.social of the #ScienceUnderSiege audiobook (by @peterhotezmdphd.bsky.social and yours truly) as narrated by the wonderful @timcampbellvo.bsky.social: www.audiofilemagazine.com/reviews/read... — Michael E. Mann (@michaelemann.bsky.social) 2025-11-13T22:15:55.439Z
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