Dr. Jack Cooper

@cooperpalaeo.bsky.social

Science Communicator with a PhD in shark functional diversity. If you couldn't tell, I like sharks. Known for studying #megalodon, the biggest of them all. Scottish. Climber, cinema-goer and cyclist. Cat person. Find more at: https://www.drjackacooper.com/

Look at that: 2 #megalodon papers in 2 days! 🦈🚨 This paper re-assesses a hypothesis that Bergmann's rule affected Meg size; & provides multiple lines of statistical evidence to support widespread nursery use instead 🦈 Many congrats to the authors: doi.org/10.1002/spp2... 🦈

No evidence for Bergmann's rule in Otodus megalodon

It has been proposed that Otodus megalodon exhibits a Bergmann-like size pattern, with individuals growing larger in cooler waters, an interpretation used to challenge the existence of fossil nursery...

doi.org

New #megalodon paper! A set of meg vertebrae from Denmark described in the 1980s was thought lost. Now, Shimada et al. have rediscovered it, confirming its origin from a huge meg that may have eaten a basking shark as its last meal! Big congrats to the authors! doi.org/10.26879/1674 🦈

Otodus megalodon vertebrae from Denmark

Rediscovery of the associated gigantic vertebrae of the extinct megatooth shark, Otodus megalodon, from the Upper Miocene Gram Formation in Denmark, and comments on its paleobiological significance an...

doi.org

🚨New website blog 🚨 Like many who study or are enthusiastic about sharks, I was saddened to learn of the passing of Dr Gordon Hubbell a couple of weeks ago. This piece documents his academic works & shares my own memories of meeting him Give it a read here: www.drjackacooper.com/writing/trib... 🦈

A tribute to Dr Gordon Hubbell and his academic works — Dr. Jack A. Cooper

I was saddened to hear of the passing of Dr Gordon Hubbell on June 14 th 2026. Like many in the field of shark palaeobiology, both academic and enthusiast, I greatly admired Gordon’s wonderful collec...

drjackacooper.com

The U.S. government requires visa applicants to make all of their social media accounts fully public or risk being denied entry. This is straight out of 1984. Your right to privacy doesn’t just disappear at the border for millions of people, it disappears before they ever set foot here.

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A retweet by Zack Polanski is now the main story across every single media outlet. Two days ago, it was revealed that Nigel Farage failed to disclose a £5 million gift from a crypto-billionaire. It gets nowhere near the media attention, for straightforward political reasons.

Elon Musk was itching to go to Epstein’s parties, and excited about all the ‘girls’ that would be there, *five years* after Epstein pleaded guilty to *procuring a child for prostitution*. What on earth did he think went on at these parties?

The President shit himself on live TV. Melania bombed. The Epstein files are sending shockwaves through the Alt Right. Liam and his dad are back home. A Texas district that was DEEP red for 35 years flipped blue. Pretti's killers have been identified. Small wins, but you can feel the change coming.

Every other summer we run a fish biomechanics course at Friday Harbor Labs. It is an awesome opportunity to learn the tools of biovisualization while experiencing the rich fish diversity of the Salish Sea. Come join us! 🧪

A flyer for a fish biomechanics course at the Friday Harbor Labs this summer.

New #megalodon paper by Herraiz et al! Using a huge dataset of meg teeth from Spain & Portugal, this work reaffirms support for a previously identified Spanish nursery area, rejecting a hypothesis of Mediterranean-wide insular dwarfism. Many congrats to the authors! 🦈 doi.org/10.1098/rsbl...

The Iberian fossil record of †Otodus megalodon rejects Mediterranean dwarfism and supports nursery use

Abstract. †Otodus megalodon, the largest known macropredatory shark, was globally distributed from the Miocene to Pliocene, yet most ecological and palaeob

doi.org

Had a fantastic experience last week at #2025SVP! Terrific talks & posters, enthralling conversations with peers; including some I’ve never met or haven’t seen in years. And of course, a great chance to spend time with the old lab team promoting our collective shark research! 🦈

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This a big deal: "China’s carbon dioxide emissions have been flat or falling for 18 months" China's economy has grown by ~5% in the last year, so this comprehensively debunks the idea (again) that emissions are tied to growth. So yes, faster progress needed, but this is how you turn the corner.

China’s CO2 emissions have been flat or falling for past 18 months, analysis finds

World’s biggest polluter on track to hit peak emissions target early but miss goal for cutting carbon intensity

theguardian.com