John Pinnegar

Century‐Scale Changes in the Feeding Patterns of Demersal Fish Species in the Western North Sea Understanding the extent and magnitude of change in marine food webs requires historical data that predates modern monitoring efforts. Such information can provide invaluable insights into the longer...

See our latest @newcastleuni.bsky.social and Cefas paper by @georginahunt.bsky.social investigating long-term changes in the feeding of fish species in the North Sea. Plaice, dab and haddock exhibited marked dietary shifts throughout the early 20th century onlinelibrary.wiley.com/doi/10.1111/...

YouTube video by The Marine Biological Association Southwest Octopus Bloom: Behind the Surge with Keith Hiscock, MBE

In 2025, an explosion of common octopus appeared across the southwest coast of England

Dr. Keith Hiscock, MBA, explains what led to this “octopus bloom”, how it connects to long-term changes in our seas, and what it could mean for the future of UK marine life.

www.youtube.com/watch?v=nR2l...

Did someone say it's take an octopus to work day?

Brilliant photos from @akwildlifefalmouth showing the extent of the octopus surge in the southwest. This Risso's dolphin seemed to be having fun 🐙

I get that the news cycle is packed right now, but I just heard from a colleague at the Smithsonian that this is fully a GIANT SQUID BEING EATEN BY A SPERM WHALE and it’s possibly the first ever confirmed video according to a friend at NOAA

10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)

1850-2025 time series of global mean temperature anomaly from the HadCRUT5 dataset.

After a brief (ahem) hiatus, the HadCRUT5 global temperature dataset has now been updated to June 2025 by @metoffice.gov.uk @climateuea.bsky.social and @ncas-uk.bsky.social

Great talk on using historical sources to map herring spawning grounds by @georginahunt.bsky.social for @projectfishistory.bsky.social.

a large body of water with a sail in the foreground and clouds in the background ALT: a large body of water with a sail in the foreground and clouds in the background

🌍🚢🚲 The journey is part of the story!
We’re curious: how did you get to #ICESASC25?

We’re looking for the most sustainable (& maybe surprising!) journey to Klaipeda. Share your travel story & let’s celebrate the many ways our community is reducing its footprint while coming together for science.🌱💙

Join us today & Wedn in #ICESASC25 session R, where you can experience the breadth of @icesmarine.bsky.social science: from marine biodiversity & benthic ecology to fish biology & stock assessment to human dimensions - we have it all covered!
@johnkpinnegar.bsky.social @laurauusitalo.bsky.social

Looking forward to seeing you (as one of the co-conveners). I hope you’ve brought an umbrella!

Systematic attribution of heatwaves to the emissions of carbon majors - Nature Climate change made 213 historical heatwaves reported over 2000–2023 more likely and more intense, to which each of the 180 carbon majors (fossil fuel and cement producers) substantially contributed.

🌀📣 “the scientific case for climate liability is closed “ says lead author of NEW Nature study: may be a game changer tracing and attributing climate damages such as from heat waves 🥵 back to emissions from individual fossil fuel companies #ClimateAction #CarbonMajors

www.nature.com/articles/s41...

MARINElife SURVEY OPPORTUNITY: CEFAS PELTIC RESEARCH CRUISE 2025
Cetic & Irish Seas, Western Channel 2-20 Oct From Falmouth
Meals & cabin provided
Requirements: ENG1 medical certificate & Personal Sea Survival Certificate email tom.brereton@marine-life.org.uk if suitable @theseabirdgroup.bsky.social

An unprecedented marine heatwave in 2023 resulted in the global ocean absorbing significantly less CO₂ than anticipated, according to new research involving our School of Environmental Sciences. 🌊🌡️

Read more 👉: bit.ly/41E7BtQ

#CarbonDioxide #OceanSink #ClimateChange

@ueaenv.bsky.social @ethz.ch

OneBenthic unites seabed data from research, government & industry — incl. offshore wind & marine aggregates.

This collaboration underpins the new BGS Predictive Seabed Sediments (UK) dataset (www.bgs.ac.uk/datasets/bgs...), openly available for science & marine management.

#OneBenthic #OpenData

Line graph time series of global ocean heat content for the 0-2000 m layer for 3 year averages, yearly averages, and five years averages from the late 1950s to 2025. There is a long-term warming trend. The baseline is 1955-2006 for the zero reference to calculate the anomalies.

Meanwhile, back in reality, global ocean heat content just updated through June 2025 and set a new record high. Time to wake up!

Data (anomalies) & methods from www.ncei.noaa.gov/access/globa...

🐟🔥 The sea is warming… and that’s changing what we catch and how much it’s worth.

📊 In the NW Mediterranean, we analyzed 23 years of data to understand how climate change is reshaping fisheries.

#ClimateChange #Fisheries #Mediterranean

@icmcsic.bsky.social 
#LuciaEspasandin

🌍 Climate change is already reshaping Mediterranean fisheries.

📊 With indicators like MTC and MTR, we can anticipate risks and opportunities.

💡 Time to act: science, management, and adaptation.

#FutureOfFisheries #BlueTransformation

A satellite image of the southern North Sea, showing land in white and the sea in shades of grey. A semicircular pattern between UK and France can be seen in the English Channel. White dots in the sea are windmills and ships.

A wave train entering into the North Sea, seen by #Sentinel1 on 12 August. I am guessing it's tidal-related, but I have never seen this kind of signal in this region in SAR data before, pretty cool 😎

@jowilliams.bsky.social

"Extraordinary" investigation into UK octopus bloom launches - Oceanographic Plymouth and Devon county councils partner with DEFRA to launch investigative study into the cause and consequences of UK octopus bloom

Thanks to Oceanographic mag for this article on our new project on the UK #octopus bloom & to Plymouth City Council, Devon County Council & Defra for their financial support
oceanographicmagazine.com/news/extraor... @thembauk.bsky.social @plymbiomarsci.bsky.social @plymuni.bsky.social @pml.ac.uk 🐙

Deep trouble – future seafloor marine heatwaves will surpass surface extremes A new study shows that marine heatwaves on the seafloor could be more than 50% more frequent in future than at the surface of the ocean during hot summer months, a concerning prospect for bottom-dwell

🌊🔥 Deep trouble: New research reveals that #seafloor #MarineHeatwaves could be more than 50% more frequent than at the surface of the ocean - threatening bottom-dwelling species that cannot escape the rising temperatures, with ripple effects across entire ecosystems: pml.ac.uk/news/deep-tr...

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#Octopus #OctopusSwarm #OctopusBloom #ClimateChange #MarineHeatwaves

Record warm seas help to bring extraordinary species to UK waters The UK's seas have had their warmest first seven months of the year on average since records began.

I (briefly) appeared on BBC Breakfast and Radio 4 this morning. The UK's seas have had their warmest start to the year since records began, helping to drive dramatic changes in marine life. @CefasGovUK ? www.bbc.co.uk/news/article...

Climate change drives shifts in straddling fish stocks in the world’s ocean As straddling stocks shift between EEZs and the high seas due to climate change, fisheries will require adaptive management.

www.science.org/doi/10.1126/...

#FutureOcean25 was a forward looking + inspiring conference about recovering our oceans. How can science + evidence be better used/integrated to improve policy and outcomes? Really enjoyed discussing this w' Theresa Marteau, @billsutherland.bsky.social‬ @johnkpinnegar.bsky.social + Stuart Green 🐟🦞🐳🌊

🌊 New paper from #Cefas colleagues on climate change, utilising data from #OneBenthic. Dive into their findings and see how #opendata are contributing to important climate research: link.springer.com/article/10.1007/s00227-025-04672-x 🌍🔬 #ClimateChange #MarineScience #CefasResearch

MPA results in a decrease in burrowing brittle stars because of increased predation pressure by flatfish. So food web effects thus override the decrease in mortality of macrofauna caused by the cessation of trawling.

conbio.onlinelibrary.wiley.com/doi/full/10....

Sharks and oysters set to thrive in warmer UK waters Climate change will benefit basking sharks in the UK but creatures like the longest living animal may struggle.

“While some species may expand into new areas, others face an uncertain future. To help species adapt, we need to create habitat corridors, closely monitor their movements, and ensure fisheries and conservation management measures evolve with the changing climate.” www.bbc.co.uk/news/article...

Climate change resilience of vulnerable marine species in northwest Europe - Marine Biology Climate change is impacting marine organisms directly through its influence on suitable habitats. We use an ensemble of five ecological niche models to determine how climate change could affect the di...

See our latest paper on "Climate change resilience of vulnerable marine species in northwest Europe" - this has been prompting quite a bit of media coverage today. link.springer.com/article/10.1...

This is phenomenal.

Sea surface temperatures are >5C above average to the west of the UK and around Iceland. It's the strongest area of anomalous warmth on the planet at the moment.

It's the warmest in recorded history for northwest Europe.

Marine heatwave: UK sea temperatures soar after exceptionally warm Spring Sea temperatures in some areas off the UK and Ireland are 4C above average.

Unusually warm sea temperatures all around the UK for the past two months - at Cefas we have been tracking this through our network of monitoring buoys. www.bbc.co.uk/news/article...

DEADLINE EXTENSION! Does your research fall into one of the 6 themes for #FSBI2025? If it does, be sure to submit your abstract by the deadline, which is 𝘁𝗵𝗶𝘀 𝗙𝗿𝗶𝗱𝗮𝘆! 'Turning Science into Strategy: Advancing Fish Conservation and Management'. 7 - 11 July 2025, Belfast - fsbi.org.uk/symposium-2025/