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Professor Jodie Rummer

@physiologyfish.bsky.social
2.9K followers 6.4K following 76 posts

Professor of marine biology at James Cook University, Australia - #biodiversity #coralreefs #fish #sharks #stress #physiology #evolution #conservation #climatechange #physioshark #TEDx #LGBTQ #STEM

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Professor Jodie Rummer @physiologyfish.bsky.social · 04/02/2026
🦈 Ep 3 Athletes of the Reef is out! New research led by Joel Gayford shows tonic immobility isn’t universal in sharks - for some species, “playing dead” may be a fatal mistake. 🎙️ Spotify: open.spotify.com/episode/05xT... 📄 Paper: doi.org/10.1007/s111... #SharkScience #MarineBiology 📸 Rachel Moore
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Professor Jodie Rummer @physiologyfish.bsky.social · 07/01/2026
🎧 Enjoying Athletes of the Reef? And the research? If you’d like to support the science behind it, tax-deductible donations make a real difference for our #shark & #coralreef fish #conservation research. Funding is tough right now. Every bit helps. 🦈🌊 rummerlab.com/donations #RummerLab #physioshark
Photo credit to Rachel Moore, adult blacktip reef sharks in Mo'orea, French Polynesia
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Professor Jodie Rummer @physiologyfish.bsky.social · 07/01/2026
Some newborn sharks have a belly button... but it heals! What can this teach us about injury healing, especially w/ ocean warming? New study by @shamildebaere.bsky.social & #physioshark team published in J. Fish Bio. Ep 002 "Athletes of the Reef" 🎧 open.spotify.com/episode/4IdN... #sharkresearch
open.spotify.com
Baby sharks, belly buttons, and the science of invincibility
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Professor Jodie Rummer @physiologyfish.bsky.social · 07/01/2026
Dr Carolyn Wheeler did excellent work w/this project during her PhD at @jcuofficial.bsky.social - interesting findings! Have a listen to the episode on our "Athletes of the Reef" podcast 🎧 open.spotify.com/episode/0V7q... 🦈 #sharkconservation #sharkresearch #walkingsharks #RummerLab #physioshark
open.spotify.com
The zero-cost mystery: how epaulette sharks may be reproducing for free
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Professor Jodie Rummer @physiologyfish.bsky.social · 09/12/2025
New #podcast episode alert! “The zero-cost mystery: how epaulette sharks may be reproducing for free” is now live on Athletes of the Reef. Surprising results from a recent study led by Dr Carolyn Wheeler! #sharkscience #reproduction #conservation 🎧 Listen → open.spotify.com/episode/0V7q...
open.spotify.com
The zero-cost mystery: how epaulette sharks may be reproducing for free
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Professor Jodie Rummer @physiologyfish.bsky.social · 20/11/2025
We need more kids like this!
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Professor Jodie Rummer @physiologyfish.bsky.social · 20/11/2025
Marine wildlife fleeing to poles due to global heating as Australian oceans face ‘uncharted’ future. The rules that we’ve been relying on for ocean protection and conservation… they’re going to have to evolve. www.theguardian.com/environment/...
theguardian.com
Marine wildlife fleeing to poles due to global heating as Australian oceans face ‘uncharted’ future
From 2040 onwards the average year for marine ecosystems is likely to be more extreme than the worst years experienced up until 2015, researchers say
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Professor Jodie Rummer @physiologyfish.bsky.social · 16/11/2025
At COP30 numbers are jaw-dropping: 1 in 25 participants is a fossil-fuel lobbyist. If change is going to come from within, then this isn’t a cameo, it’s control. We need institutional integrity & transparency - not just token seats at the table. www.theguardian.com/environment/... #ClimateAction
theguardian.com
Fossil fuel lobbyists outnumber all Cop30 delegations except Brazil, report says
One in every 25 participants at 2025 UN climate summit is a fossil fuel lobbyist, according to Kick Big Polluters Out
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RogueNOAA @roguenoaa.altgov.info · 14/11/2025
“The National Marine Fisheries Service announced today that it will form a federal task force to curb Pacific humpback whale entanglements in fishing gear. Dozens of humpbacks are entangled off the Pacific Coast every year.” biologicaldiversity.org/w/news/press...
biologicaldiversity.org
Pacific Humpbacks Win Task Force to Fight Deadly Entanglements
Center for Biological Diversity: Multi-Stakeholder Group to Recommend Plan for Curbing Whale Deaths
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Professor Jodie Rummer @physiologyfish.bsky.social · 14/11/2025
Australia is reshaping its national environment laws, but EPBC Act reforms still leave big gaps. Weak standards, political exemptions, & no accountability for climate impacts = risks for nature. Strong, enforceable protections matter - especially now. biodiversitycouncil.org.au/resources/ge...
biodiversitycouncil.org.au
Getting the EPBC Act right | Biodiversity Council Australia
Our factsheet outlines the strengths, weaknesses, and recommended improvements to the Australian Government’s proposed environmental law reforms.
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Professor Jodie Rummer @physiologyfish.bsky.social · 29/10/2025
Heartbreaking loss: juvenile humpback whale (~8m) entangled & drowned in shark net off NSW coast. Shark nets don’t necessarily do what we assume -- protect beach-goers -- and pose serious risks to sharks, whales, dolphins, turtles, and other non-target animals. www.theguardian.com/environment/...
theguardian.com
Juvenile humpback whale dies off NSW coast while entangled in shark net
It is the first whale to have died out of 15 entangled in shark nets on Australia’s east coast so far this year
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National Association for Environmental Education UK @naee-uk.bsky.social · 15/10/2025
Great Barrier Reef was saved - for a while @physiologyfish.bsky.social @profterryhughes.bsky.social @learnfromnature.bsky.social
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Professor Jodie Rummer @physiologyfish.bsky.social · 26/09/2025
You can have your (crab)cake & eat it too! Well said! #sustainabilitypossibilities 🦀🐟🐠🐡🍤🎣
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Professor Jodie Rummer @physiologyfish.bsky.social · 25/09/2025
But dozens of Australian scientists, including some of the country’s top climate researchers, wrote Albanese this week expressing dismay at the target, imploring the government “to go further”. www.theguardian.com/world/2025/s... @australia.theguardian.com @euanritchie.bsky.social #climatecrisis
theguardian.com
Unite to end wars and tackle climate crisis, Australian PM tells UN in veiled swipe at US isolationism
Australia’s prime minister Anthony Albanese also resurrects bid for temporary seat on UN security council
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Professor Jodie Rummer @physiologyfish.bsky.social · 25/09/2025
We’re back in the shark nurseries next week 🦈 Early support helps most — grab a tee/singlet/jumper/hoodie (order-on-demand). 100% of profits fund shark science, students, outreach & advocacy. Ships worldwide. Shop: www.bonfire.com/physioshark-... #Physioshark #SharkScience
bonfire.com
Science for sharks, resilience for reefs | Bonfire
Empowering shark science: fieldwork, student support, data, & evidence-based ocean policy.. When you grab a tee, singlet, jumper, or hoodie, 100% of profits goes straight...
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Professor Jodie Rummer @physiologyfish.bsky.social · 10/09/2025
Half a century ago, the Great Barrier Reef was to be drilled for oil. It was saved – for a time theconversation.com/half-a-centu...
theconversation.com
Half a century ago, the Great Barrier Reef was to be drilled for oil. It was saved – for a time
In the late 1960s, oil and gas companies began exploring the Great Barrier Reef for oil. It took campaigners, unionists and a royal commission to protect the reef.
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Professor Jodie Rummer @physiologyfish.bsky.social · 09/09/2025
Eight of the top 10 online shows are spreading climate misinformation  yaleclimateconnections.org/2025/04/eigh...
yaleclimateconnections.org
Eight of the top 10 online shows are spreading climate misinformation  » Yale Climate Connections
Often backed by large advertising budgets, a new breed of climate denial is gaining popularity.
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Professor Jodie Rummer @physiologyfish.bsky.social · 06/09/2025
50 years of the Great Barrier Reef Marine Park Act… what were the initial drivers? What does it mean now in a time of 30 by 30? theconversation.com/half-a-centu...
theconversation.com
Half a century ago, the Great Barrier Reef was to be drilled for oil. It was saved – for a time
In the late 1960s, oil and gas companies began exploring the Great Barrier Reef for oil. It took campaigners, unionists and a royal commission to protect the reef.
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Professor Jodie Rummer @physiologyfish.bsky.social · 04/09/2025
Baby shark season is nearly here 🌊🦈 Since 2013 Physioshark has built a 12-year dataset (~1800 pups). Support climate change research on reef shark nurseries, student training, outreach, & advocacy. Tees, singlets, hoodies. 100% profits to the lab. Shop: shorturl.at/SKFfX #Physioshark #SharkScience
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Sea⚡Kelpie 🔥🐉 @seakelpie.bsky.social · 28/08/2025
@bruceshark.bsky.social
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David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · 26/08/2025
Friends, I am offering a free online 2-hour crash course in how to write and publish a scientific paper, perfect for early career scientists and students considering writing their first paper soon. All information can be found in this link: www.southernfriedscience.com/im-offering-... 🧪🌎🦑
southernfriedscience.com
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Professor Jodie Rummer @physiologyfish.bsky.social · 27/08/2025
Newborn reef sharks are ninja swimmers! 🥷🦈⚡️ Our latest study shows pups can dodge predators in under 20ms. A reminder of how amazing—and vulnerable—shark nursery habitats are. Read more via @jcuofficial.bsky.social : www.jcu.edu.au/news/release...
jcu.edu.au
Newborn sharks swim like ‘ninjas’ to avoid predator attacks
New research shows that baby blacktip reef sharks use warm waters to boost their escape performance from adult sharks, barracudas and other predators.
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Professor Jodie Rummer @physiologyfish.bsky.social · 18/08/2025
Feeling incredibly proud to be featured in Cosmos Magazine in a piece by Dr Richard Musgrove on my journey in fish physiology, climate change, coral reefs, & sharks. Thanks to all the colleagues/students who make this work possible. 🌏🦈🪸 🔗 cosmosmagazine.com/nature/marin... @jcuofficial.bsky.social
cosmosmagazine.com
Dream of breathing underwater inspired fish physiology career
A gift of snorkelling gear and trip to Florida was all it took to hook 8-year-old Jodie Rummer, now renowned fish physiologist, into marine science.
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Professor Jodie Rummer @physiologyfish.bsky.social · 18/08/2025
Thanks for the shout out, and timely as I celebrate my 14-year anniversary as faculty at @jcuofficial.bsky.social !!! Inspire and be inspired. 🦈🪸🌏🌊
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Professor Jodie Rummer @physiologyfish.bsky.social · 07/08/2025
Just out! @conphysjournal.bsky.social led by new PhD Dr José Trujillo w/ @physioshark - warmer waters (thermal sweet-spot) increased acceleration, agility, & response time in newborn blacktip reef sharks 🦈 📄 academic.oup.com/conphys/arti... @universityofotago.bsky.social @jcuofficial.bsky.social
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Professor Jodie Rummer @physiologyfish.bsky.social · 07/08/2025
The Great Barrier Reef is a global icon & national treasure, but it's also a frontline casualty of climate change. What happens to the Reef is a warning signal for marine ecosystems globally. We still have time — but only if we act now. @jcuofficial.bsky.social 📸 @physiologyfish.bsky.social
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Conservation Physiology @conphysjournal.bsky.social · 21/07/2025
With @sjcfishy.bsky.social @andreafuller.bsky.social @craigefranklin.bsky.social @calebhasler.bsky.social @physiologyfish.bsky.social & more.
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Conservation Physiology @conphysjournal.bsky.social · 21/07/2025
🐦 Frédéric Dwyer-Samuel from the Nunatsiavut Government shares how cooperation between Indigenous communities, governments & academics is improving understanding of the impacts of oil spills 🛢️ on marine birds.
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Conservation Physiology @conphysjournal.bsky.social · 21/07/2025
Featuring... 🐊 Insights from Robert & Terri Irwin on the decades long study of saltwater crocodiles at the Steve Irwin Wildlife Reserve.
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Conservation Physiology @conphysjournal.bsky.social · 21/07/2025
Translating #Conservation research into meaningful action requires collaboration between multiple stakeholders 🤝. This #Perspective includes case studies & guidance for co-produced research. #CoProduction With emphasis on generating effective & inclusive outcomes. ➡️ doi.org/10.1093/conp... 🌎 🧵
Graphic of shaking hands above quotation reading "embracing co-production is increasingly regarded as the single-most important approach for generating actionable science to inform conservation".
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Professor Jodie Rummer @physiologyfish.bsky.social · 22/07/2025
New paper in Ecology & Evolution: analysed 187 species of rays & skates to explore patterns of sexual size dimorphism. Turns out SSD in rays doesn’t follow the same rules as in sharks. ❓Differences in reproductive strategies❓ 🔗 doi.org/10.1002/ece3... #SharkScience #Evolution #MarineBiology
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Professor Jodie Rummer @physiologyfish.bsky.social · 11/07/2025
Indeed... one of the many mysteries we still have to unravel! We're super happy to share this paper led by @jcuofficial.bsky.social PhD candidate Joel Gayford!
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Wobbologist @wobbologist.bsky.social · 03/07/2025
I love that not all #sharks even undergo TI (tonic immobility) because it makes it even more curious! There's so little info on all of this in general that any new info creates a lot of questions :) @physiologyfish.bsky.social 🧪 🦈 🐟 🦑 Recent paper about this: link.springer.com/article/10.1...
link.springer.com
Tonic immobility in cartilaginous fishes (Chondrichthyes): function, evolutionary history, and future directions - Reviews in Fish Biology and Fisheries
Tonic immobility, a temporary cessation of voluntary movements, is a widespread phenomenon within the animal kingdom. While commonly regarded as an ‘anti-predator’ defence strategy, empirical evidence...
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Professor Jodie Rummer @physiologyfish.bsky.social · 11/07/2025
We are super proud of this paper led by @jcuofficial.bsky.social PhD student @joelgaylard.bsky.social - so cool that #sharks follow these centuries-old mathematical scaling 'rules' almost perfectly!!
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Conservation Physiology @conphysjournal.bsky.social · 30/06/2025
Come along to the Atrium on Weds at #SEB2025 to meet the team! 👋 With @andreafuller.bsky.social @physiologyfish.bsky.social @kruthsatz.bsky.social @conphysjournal.bsky.social & more. @sebiology.bsky.social
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joeymaier 🌊 @joeymaier.bsky.social · 28/06/2025
Further coverage - this time from phys.org - of the new paper from Joel Gayford and @physiologyfish.bsky.social that discusses why some (but not all) #sharks go into tonic immobility when flipped over share.google/UNtr8XAP7cNB...
share.google
Sharks freeze when you turn them upside down—and there's no good reason why
Imagine watching your favorite nature documentary. The predator lunges rapidly from its hiding place, jaws wide open, and the prey … suddenly goes limp. It looks dead.
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joeymaier 🌊 @joeymaier.bsky.social · 29/06/2025
More coverage, this time from SciTechDaily, of paper from Joel Gayford and @physiologyfish.bsky.social on #shark size/surface area ratios scitechdaily.com/sharks-follo...
scitechdaily.com
Sharks Follow This Universal Math Rule, Confirming a Century-Old Law of Biology
A new study has confirmed that sharks follow established patterns when it comes to body size, and this finding could change how scientists understand biological trends throughout the animal kingdom. F...
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joeymaier 🌊 @joeymaier.bsky.social · 25/06/2025
You know how a #shark goes immobile or "tonic" when flipped over on its back? TIL that isn't true for all species. A new study from Joel Gayford and @physiologyfish.bsky.social says: three different orders of shark..seem to have all lost the ability to go into tonic www.jcu.edu.au/news/release...
jcu.edu.au
‘Playing dead’ overrated for sharks, rays
‘Playing dead’ might be the key to survival for many species in the animal kingdom, but new research from James Cook University suggests it’s no great help for sharks and rays.
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GK @fabiosfan.bsky.social · 24/06/2025
Fear? We know when one is faced with uncertainty the response is fight/flight/freeze… Sharks do not swim upside down. Holding them this way could trigger their nervous system…
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Professor Jodie Rummer @physiologyfish.bsky.social · 24/06/2025
Some sharks freeze when you turn them upside down – and there’s no good reason why... anymore. New study 📄 theconversation.com/sharks-freez... by Gayford & Rummer at @jcuofficial.bsky.social #sharkscience #evolution
theconversation.com
Sharks freeze when you turn them upside down – and there’s no good reason why
Rather than a clever survival tactic, tonic immobility might just be ‘evolutionary baggage’.
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Professor Jodie Rummer @physiologyfish.bsky.social · 24/06/2025
New @jcuofficial.bsky.social study — tonic immobility in sharks may be ancient evolutionary baggage — not a survival trick. 📄 doi.org/10.1007/s111... Some sharks freeze when flipped over. Does it help them survive? Probably not. Maybe leftover from their ancient ancestors. #SharkScience #Evolution
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Duncan J Irschick @duncanirschick.bsky.social · 21/06/2025
Great article written by Joel Gayford & @physiologyfish.bsky.social on our recent paper in Royal Society Open Science Journal using #3D models to study shark scaling. Credit also to co-authors Johnson Martin & Andrew Chin as well. theconversation.com/sharks-come-...
theconversation.com
Sharks come in many different shapes and sizes. But they all follow a centuries-old mathematical rule
A new study proves for the first time that the ‘two-thirds scaling law’ applies to large animals as well as small ones, offering key lessons for conversation.
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Professor Jodie Rummer @physiologyfish.bsky.social · 22/06/2025
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Professor Jodie Rummer @physiologyfish.bsky.social · 19/06/2025
New paper out today! 🦈 We tested whether blacktip reef shark dorsal fins are reliable for photo ID – they are! ✅ Stable over time ✅ Unique among individuals 📍Long-term dataset from French Polynesia Led by Physioshark 🔗 doi.org/10.1111/jfb.... #SharkScience #MarineBiology @jcuofficial.bsky.social
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Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 18/06/2025
This very likely has some important implications for reconstructing Carcharocles megalodon!
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joeymaier 🌊 @joeymaier.bsky.social · 18/06/2025
🦈 #shark A new study from JCU researchers Joel Gayford and @physiologyfish.bsky.social has examined the surface area to volume ratio of 54 species of shark, finding that it tends to follow the same trend we expect to see for individual cells royalsocietypublishing.org/doi/10.1098/...
royalsocietypublishing.org
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joeymaier 🌊 @joeymaier.bsky.social · 18/06/2025
Further coverage, this time from The Conversation, of new paper Joel Gayford and @physiologyfish.bsky.social showing that "sharks seem to converge on the same basic body plan when it comes to surface area and volume"
Picture showing the consistency of surface area to volume ratio in 54 different shark species
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Ocean Hoptimism @oceanhoptimism.org · 18/06/2025
Sharks: 450 million years of toothy excellence, still following a centuries-old geometry rule. Meanwhile, you’re still using that “passionate self-starter” line on your resume. Excellent shark content & summary of a new study! #OceanHoptimism #SharkMath #EvolutionaryFlex #UpdateYourResume
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Professor Jodie Rummer @physiologyfish.bsky.social · 18/06/2025
Sharks come in many different shapes and sizes. But they all follow a centuries-old mathematical rule theconversation.com/sharks-come-...
theconversation.com
Sharks come in many different shapes and sizes. But they all follow a centuries-old mathematical rule
A new study proves for the first time that the ‘two-thirds scaling law’ applies to large animals as well as small ones, offering key lessons for conversation.
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Professor Jodie Rummer @physiologyfish.bsky.social · 18/06/2025
Sharks just proved the 2/3 scaling law. 🦈📏 Using 3D modelling of 54 species, we found sharks follow the expected surface area-to-volume relationship almost perfectly — validating a key physiological theory. 📄 doi.org/10.1098/rsos... 📸 Rachel Moore 📍 @jcuofficial.bsky.social #SharkScience #shark
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