Dr Vincent Raoult
LightNews LightNews
banner
sawsharkman.bsky.social
Dr Vincent Raoult
@sawsharkman.bsky.social
4.5K followers 450 following 740 posts

Ecologist and fisheries biologist specialising in sharks and rays. Stable isotope expert and general technology aficionado. Senior lecturer in marine ecology, Griffith University (he/him)

Videos
Environmental science 71%
Geography 18%
Posts Replies Media Videos
Pinned
sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · Jul 6
2024 saw a global bleaching event, but bleaching doesn't always mean corals die. Using drones, we found the 2024 bleaching event killed over 90% of shallow corals at Lizard Island. 🧪🦑🧵

We have to act now.

@griffith.edu.au JCU MQ @geonadir.bsky.social CSIRO

link.springer.com/article/10.1...
Coral bleaching and mass mortality at Lizard Island revealed by drone imagery - Coral Reefs
Quantitatively assessing mortality post coral bleaching at scale is inherently difficult, yet can be achieved with georeferenced imagery from aerial drones. Here, we assess the coral bleaching mortali...
link.springer.com

Reposted by Vincent Raoult

joeymaier.bsky.social
joeymaier 🌊 @joeymaier.bsky.social · 2d
🦈 #shark #depredation

A new study out of Mote Marine Laboratory suggests a small electronic device could help solve a frustrating problem for anglers...
sharks successfully took the bait 92% of the time when the device was off — but only 46% of the time when it was on.

baynews9.com/fl/tampa/new...
Researchers test device designed to keep sharks off anglers’ lines
A U.K. company called Fishtek developed a device called "SharkGuard."
baynews9.com

Reposted by Vincent Raoult

matiasbraccini.bsky.social
Matias Braccini @matiasbraccini.bsky.social · 4d
Underwater cameras reveal the behaviours and interactions of marine wildlife around demersal shark fishing gear.
We saw an overall low incidence of detrimental (gear capture) marine wildlife interactions
authors.elsevier.com/a/1mZKbbiU28...

Reposted by Richard Denniss, Vincent Raoult

rodcampbell.bsky.social
Rod Campbell @rodcampbell.bsky.social · 4d
Let's get this straight.

Adani donates $600k the Qld LNP before election.

After the election, Qld LNP ends legal action over $400 MILLION in unpaid royalties.

Dodgy, dodgy, dodgy. Thread.
www.theguardian.com/australia-ne...

Reposted by Vincent Raoult

physiologyfish.bsky.social
Professor Jodie Rummer @physiologyfish.bsky.social · 6d
🦈 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

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 7d
Looks like a fab place for a wedding! Hope it was epic

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 9d
A hugo winner willing to work for $40 an hour hahahahah

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 9d
$40 an hour for a Nebula winner rofl

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 10d
Oooooh so AI will lower the cost of timber?

Reposted by Vincent Raoult

austsocfishbiol.bsky.social
Australian Society for Fish Biology @austsocfishbiol.bsky.social · 11d
📢 We are seeking Expressions of Interest for the role of ASFB Newsletter Editor 🐟🦈🐠

🔗For more details and how to apply: tinyurl.com/3ussu7vv

Reposted by Graeme S. Cumming, Vincent Raoult

aunz.theconversation.com
The Conversation AUNZ @aunz.theconversation.com · 13d
The teeth of white sharks are not static weapons but living records of a shark’s changing lifestyle.
Great white sharks grow a whole new kind of tooth for slicing bone as they age
theconversation.com

Reposted by Craig R. McClain, Vincent Raoult

rebeccarhelm.bsky.social
Rebecca R Helm @rebeccarhelm.bsky.social · 15d
Timeline cleans with snowflake-sized baby lagoon jellyfish.

.

🎥 jelliesfarm www.instagram.com/jelliesfarm?...

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 19d
Oh noooooooooooo...

Reposted by Colin A. Simpfendorfer, Patrícia Charvet, Vincent Raoult

nickdulvy.bsky.social
Nick Dulvy @nickdulvy.bsky.social · 19d
What’s driving the decline?

The crisis isn’t just fishing — it’s invisible fishing.

Much shark & ray catch is under-reported, aggregated, or mislabeled, masking real mortality & delaying management.

What we don’t measure, we don’t manage.

@cgmull.bsky.social
@nathanpacoureau.bsky.social
Taxonomic differentiation of catch. FAO (United Nations Food and Agricultural Organization) on the percentage of catch reported to the species level worldwide.

Reposted by Colin A. Simpfendorfer, Graeme S. Cumming, Trevor A. Branch , and 4 more

nickdulvy.bsky.social
Nick Dulvy @nickdulvy.bsky.social · 19d
New paper out today in @natrevbiodiv.nature.com by the #GlobalSharkTrends team: Bending back the curve of shark & ray biodiversity loss;
Read the paper here: rdcu.be/eZ9n9
@sfu.ca
@sfubiosciences.bsky.social
@earth2ocean.bsky.social
Bending back the biodiversity loss curve of sharks and rays. The loss of sharks and rays to date has involved serial depletion of the largest, most evolutionary and functionally distinct species, and the increasing prevalence of smaller-bodied species that have benefited from release from predation.

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 19d
Culls have been happening to the point bull shark populations are more likely to be declining along coasts than increasing. What's more, we have plenty of evidence that short of eliminating sharks (which would cost a fortune!), culls won't reduce shark bites at all.
euanritchie.bsky.social Professor Euan Ritchie @euanritchie.bsky.social · 19d
Shark culls have been happening in QLD & NSW, for decades, through shark nets & drumlines. They're diabolical for sharks & other wildlife, including whales, dolphins, dugongs & sea turtles.

They do stuff all to improve safety, but education does! 👉 www.sharksmart.nsw.gov.au/staying-safe
Staying Safe - SharkSmart
www.sharksmart.nsw.gov.au

Reposted by Vincent Raoult

euanritchie.bsky.social
Professor Euan Ritchie @euanritchie.bsky.social · 19d
Shark culls have been happening in QLD & NSW, for decades, through shark nets & drumlines. They're diabolical for sharks & other wildlife, including whales, dolphins, dugongs & sea turtles.

They do stuff all to improve safety, but education does! 👉 www.sharksmart.nsw.gov.au/staying-safe
Staying Safe - SharkSmart
www.sharksmart.nsw.gov.au

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 20d
Yet another reason (other than sharks) to stay out of the water for a little longer...

Reposted by Vincent Raoult

lenoret.bsky.social
Lenore Taylor @lenoret.bsky.social · 20d
They're back

www.theguardian.com/australia-ne...
New poo balls on Sydney beaches after revelation of huge fatberg stuck in treatment plant
Exclusive: Sydney Water erects sign at Malabar beach near wastewater facility stating ‘do not touch any debris … we are cleaning the area’
www.theguardian.com

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 20d
I mean the discourse using the median. Mean is much more appropriate to discuss impacts like this because it includes rather than excludes far outliers.

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 20d
They pick the median probably because it makes them look better. In this case it's probably better to use an average...

Reposted by Jan Geert Hiddink, Vincent Raoult

trevorabranch.bsky.social
Trevor A. Branch @trevorabranch.bsky.social · 20d
Healthy and sustainable fisheries have lower carbon emissions and fuel use, because fish are more abundant and easier to catch with less effort. Rebuilding fisheries and ensuring that fleet sizes are appropriate for catch level, are keys for CO2 reduction
By Hilborn et al.
doi.org/10.1111/faf....
doi.org

Reposted by Shannon Vallor, David M. Schultz, Carl T. Bergstrom , and 25 more

irishtimes.com
The Irish Times @irishtimes.com · 20d
AI boom could falter without wider adoption, Microsoft chief Satya Nadella warns
AI boom could falter without wider adoption, Microsoft chief Satya Nadella warns
Big tech boss tells delegates at Davos that broader global use is essential if technology is to deliver lasting growth
www.irishtimes.com

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 21d
I love Jaws (as do many shark scientists). Just avoid swimming in sharky water like there is around Sydney right now! I'd want to avoid the sewage as much as the sharks...

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 21d
Absolutely agree. NSW government made a big effort to educate the public after a spate of fatalities in 2015, but that was a decade ago and maybe the message needs to be reinforced.

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 21d
You've basically answered your own question! Hawaii ran the largest culling program in history (over 5,000 sharks killed) and it had no measurable effect on shark bites. Essentially the same here in Australia, we've been culling sharks (with shark nets) for 70 years and hasn't made a dent.
cofactorstrudel.bsky.social Stone Cold Jane Austen @cofactorstrudel.bsky.social · 21d
I don't know a lot about sharks. Why doesn't less sharks = less bites? Is it because bites are so rare already and they're not happening due to numbers but stray sharks wandering in? I'm not advocating culling I'm just curious 🙏

Reposted by Vincent Raoult

cofactorstrudel.bsky.social
Stone Cold Jane Austen @cofactorstrudel.bsky.social · 21d
I don't know a lot about sharks. Why doesn't less sharks = less bites? Is it because bites are so rare already and they're not happening due to numbers but stray sharks wandering in? I'm not advocating culling I'm just curious 🙏

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 21d
This is when bull sharks aren't resident in Sydney harbour year round anyway...

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 21d
Chief reason not to go in brackish water like this after heavy rain: it's full of actual poop and other nasty chemicals. It's a one-way ticket to an ear infection, this is on top of the sharks!
wendyharmer.bsky.social Wendy Harmer @wendyharmer.bsky.social · 21d
The message is simple - after heavy rain, sewage washes into the water, the baitfish feed on it and the bull sharks are out after them. Poor visibility and they bite!!

Most surfers know this - we need public education on this - NOT culling sharks! (Vital for ecosystems and many endangered)

Reposted by Tim Stephens, Vincent Raoult

wendyharmer.bsky.social
Wendy Harmer @wendyharmer.bsky.social · 21d
The message is simple - after heavy rain, sewage washes into the water, the baitfish feed on it and the bull sharks are out after them. Poor visibility and they bite!!

Most surfers know this - we need public education on this - NOT culling sharks! (Vital for ecosystems and many endangered)

Reposted by Euan G. Ritchie

sawsharkman.bsky.social
Dr Vincent Raoult @sawsharkman.bsky.social · 21d
No, culling sharks will not lower the risk of bites. We've been culling sharks for 70+ years through the shark control programs, and the evidence we have suggests bull shark numbers are already declining. Very disappointed that a scientist would suggest culling.

connectsci.au/mf/article/7...