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John Pinnegar

@johnkpinnegar.bsky.social

91 followers 58 following 8 posts

Director of the Collaborative Centre for Sustainable Use of the Seas (CCSUS) at Cefas and UEA and of the International Marine Climate Change Centre (iMC3).

Videos

Environmental science 68%

Geography 18%

Posts Media Videos Starter Packs

Reposted by John K. Pinnegar

The Marine Biological Association @thembauk.bsky.social · 1d

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...

Southwest Octopus Bloom: Behind the Surge with Keith Hiscock, MBE

YouTube video by The Marine Biological Association

www.youtube.com

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Reposted by John K. Pinnegar

The Marine Biological Association @thembauk.bsky.social · 3d

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 🐙

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Reposted by Lisa W. Fazio, Rebecca Solnit, Graeme S. Cumming , and 24 more Lisa W. Fazio, Rebecca Solnit, Graeme S. Cumming, John K. Pinnegar, Ken Caldeira, Grant D. Stentiford, John R. Hutchinson, Mark D. White, Alex Callinicos, Dawn J. Wright, Parliamentary Library, Cathy N. Davidson, Margaret Johnston, Jussi T. Eronen, Trevor A. Branch, Andrew L. Whitehead, Jonathan Birch, Jennifer A. Johnson, Allan D. McDevitt, Anthony Burke, Halley E. Froehlich, Andrew M. Riggsby, Kathleen Kennedy, David H. Price, Charles T. Mathewes, Richard Moorhead, Vincent Raoult

Rebecca R Helm @rebeccarhelm.bsky.social · 15d

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 🧵)

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Reposted by John Kennedy, Peter Thorne, John K. Pinnegar , and 3 more John Kennedy, Peter Thorne, John K. Pinnegar, Du Toit, Ed Hawkins, Flavio Lehner

Tim Osborn @timosbornclim.bsky.social · 17d

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

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

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Reposted by John K. Pinnegar

Jan Geert Hiddink @jangeerthiddink.bsky.social · 23d

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

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Reposted by John K. Pinnegar

ICES - International Council for the Exploration of the Sea @icesmarine.bsky.social · 23d

🌍🚢🚲 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.🌱💙

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

media.tenor.com

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Reposted by John K. Pinnegar

Nathalie Steins @nathaliesteins.bsky.social · 24d

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

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John Pinnegar @johnkpinnegar.bsky.social · 25d

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

Reposted by John K. Pinnegar

Dr Eva Plaganyi @drevaplaganyi.bsky.social · 29d

🌀📣 “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...

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.

www.nature.com

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Reposted by John K. Pinnegar

OneBenthic @onebenthic.bsky.social · Sep 5

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

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Reposted by John K. Pinnegar

University of East Anglia (UEA) @uniofeastanglia.bsky.social · Sep 4

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

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Reposted by John K. Pinnegar, Du Toit, Gavin A. Schmidt , and 2 more John K. Pinnegar, Du Toit, Gavin A. Schmidt, Grant D. Stentiford, David Johnson

Zack Labe @zacklabe.com · Aug 31

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...

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.

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Reposted by Marta Coll, John K. Pinnegar

iMARES_group @imares-group.bsky.social · Aug 25

🌍 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

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Reposted by Marta Coll, John K. Pinnegar

iMARES_group @imares-group.bsky.social · Aug 25

🐟🔥 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

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Reposted by John K. Pinnegar, Grant D. Stentiford

Aida Alvera-Azcárate @aida-alvera.bsky.social · Aug 21

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

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.

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Reposted by John K. Pinnegar, Jan Geert Hiddink, Nathalie A. Steins

tombrereton.bsky.social @tombrereton.bsky.social · Aug 19

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 [email protected] if suitable @theseabirdgroup.bsky.social

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Reposted by John K. Pinnegar

Plymouth Marine Laboratory @pml.ac.uk · Aug 19

🌊🔥 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...

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

pml.ac.uk

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Reposted by John K. Pinnegar, Grant D. Stentiford

Bryce Stewart @bd-stew.bsky.social · Aug 16

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 🐙

"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

oceanographicmagazine.com

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Reposted by John K. Pinnegar

Plymouth Marine Laboratory @pml.ac.uk · Aug 13

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#Octopus #OctopusSwarm #OctopusBloom #ClimateChange #MarineHeatwaves

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John Pinnegar @johnkpinnegar.bsky.social · Aug 11

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...

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.

www.bbc.co.uk

Reposted by Grant D. Stentiford

Reposted by John K. Pinnegar

Prof Grant Stentiford @cefaschiefsci.bsky.social · Aug 2

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

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

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Reposted by John K. Pinnegar

Dr Anna Sturrock @otolithgirl.bsky.social · Jul 3

#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 🐟🦞🐳🌊

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Reposted by John K. Pinnegar

OneBenthic @onebenthic.bsky.social · Jun 20

🌊 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

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Reposted by John K. Pinnegar

Reposted by Jan Geert Hiddink, Nathalie A. Steins

John Pinnegar @johnkpinnegar.bsky.social · Jun 18

“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...

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.

www.bbc.co.uk

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