The sandbar shark is so boring even the triangles it forms with its fins are obtuse. #YawnShark @whysharksmatter.bsky.social

New paper is out 🔓! We reconstructed the 145-myr diversity of sharks & rays using deep learning, unveiling hidden patterns: - modern diversity levels by the Cretaceous 📈 - small decline in the K/Pg 🤏 - a peak in the Eocene 🌄 - a long-term decline towards the present � www.cell.com/current-biol...

New online! Bending back the curve of shark and ray biodiversity loss

Great 🧵on 🦈 trends by @nickdulvy.bsky.social 👇🏼

We don’t need new frameworks — we need to connect and implement the ones we have. Fisheries management, trade rules, compliance, and demand must align to reduce fishing mortality at scale. Implementation is the bottleneck. @hollieboothie.bsky.social @sharkcolin.bsky.social

Decline is not inevitable. Where fishing mortality has been reduced — through catch limits, retention bans, or spatial protection — shark and ray populations are stabilizing or recovering. Recoveries documented for wide-ranging and restricted-range species @charlie-huveneers.bsky.social

Gaps in catch limits, compliance, and enforcement mean fishing mortality stays high even where policies exist. Where management is complete, risk is lower and recovery is possible. @hollieboothie.bsky.social @sharkcolin.bsky.social Read the paper here: rdcu.be/eZ9n9

Overfishing is compounded by under-management Fishing mortality is the primary driver & management completeness (for guitarfishes & requiem sharks) stands at ~49% globally. @sammsherman27.bsky.social @vanderwright.bsky.social Read the paper here: rdcu.be/eZ9n9

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

Sharks & rays are sentinels of ocean health. - Global abundance has been fished down by 65%, - Now 37.5% of species are threatened, - The current extinction rate is 25–250 times greater than the background fossil record, with greatest losses in tropical coastal seas. #BiodiversityTargets

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

Sometimes you stumble on some #sharkscience that makes you think you don't really know anything about them at all. Yesterday i found this paper: "Observations of the bowmouth guitarfish by-catches by the tropical tuna purse seine fleet in the Indian Ocean’s open waters" doi.org/10.1017/S002...

And more new #sharkscience, this time from Sushmita Mukherji "Assessing mechanisms of intrinsic vulnerability in sharks occupying different marine environments" link.springer.com/article/10.1... @imas-utas.bsky.social @iucnshark.bsky.social

New #sharkscience #sharkconservation "Bending back the curve of shark and ray biodiversity loss" in @natrevbiodiv.nature.com go.nature.com/4jXOnaC What will it take to reverse shark biodiversity loss? Find out in our new article out today. @nickdulvy.bsky.social @iucnshark.bsky.social

🐟 New vacancy in the fish tracking community 📢 Come join Dr. Jan Reubens and his team at the Flanders Marine Institute (@vliz.be) as a Fish Behavioral Ecology Researcher! 🔗Read more about the position and apply here: www.vliz.be/en/jobs/vliz... ❗Deadline 25 January, 2026

🚨 Job Alert! TT Assistant Professor of Marine Biology at the University of Alaska Fairbanks! Looking for a candidate with a focus on coastal ecology. Come be my colleague! Please share. careers.alaska.edu/jobs/assista...

The last proposal for sharks has just passed at #CITESCoP20. Gulper Sharks have been adopted into Appendix II of CITES. This marks a major victory for sharks and rays as all proposals have been adopted! #CITES #CoP20 #gulpershark #shark #ray #chimaera #biodiversity #conservation #trade #conference

The 2024–25 IMOS Annual Highlights are now out, showcasing key achievements from across our program and community 🌊 🔗 bit.ly/3MkLMKQ #NCRISImpact

We are hiring: #PhD fellow in Ecosystem-based management and marine connectivity🐋🧪🛰️ Want to work with tracking data from migratory species to identify ecological corridors and help inform biodiversity conservation priorities? Apply by Dec 7th! @bioprotectproject.bsky.social tinyurl.com/ytfmfhfc

A guide to: Sri Lankan Wildlife 🐆 Sri Lanka is a global biodiversity hotspot, home to unique and endemic species, including around 140 mammals, 400 birds, and 170 reptiles. 🦈 SI2026 📅 Dates: 4-8 May 📍 Location: Colombo, Sri Lanka 🔗 si2026.org

It's live! Impacts of Deep-sea Mining on Migratory Species: Review and Knowledge Gaps. In English, French, and Spanish. Annex I is the actual report. www.cms.int/document/dee...

📣 Announcement! Abstract Submission Deadline Extended to November 30, 2025 Being guilty of last minute submissions ourselves, we felt that a few more days would help those of you processing your abstract ideas! 👉 si2026.org

Seven JCU researchers have been named in the @clarivateag.bsky.social annual list of Highly Cited Researchers. Demonstrating significant and broad influence in their fields of research. See the full list here: clarivate.com/highly-cited...

NEW #SharkLeague #ICCAT Factsheet outlines key steps needed to strengthen existing measures & close critical gaps - from enforcing the finning ban & rebuilding shortfin mako populations to protecting basking & white sharks, & ensuring sustainable blue 🦈 fisheries sharkleague.org/2025/11/10/i...

PhD position - Changing Ecological Role of Coral Reef Marine Protected Areas. One of the new @exageo-dla.bsky.social advertised projects: www.exageo.org/phd-student-... - deadline for applications 9th January. International applications welcome. Come and join us @lec-reefs.bsky.social

Annual plug for the fabulous phylopic.org website with tens of thousands of easily searchable silhouette images for almost every life form imaginable. They make nice additions to your biology plots!

For the past 4 years I have worked with a wonderful team of scientists and anglers to track sharks in recreational fisheries. With close to 70 tags deployed, we found that good angling practice can result in pretty high survival for sharks! 🦈🎣🌊

NEW PAPER: Survival and recovery of three shark species in North-East Atlantic recreational fisheries. academic.oup.com/icesjms/arti... @garzonfrancesco.bsky.social @drmjwitt.bsky.social 🦑🐟🧪🌐🌊🎣

FINAL DEADLINE | 15 NOVEMBER 2025 Reminder that abstract submissions for Sharks International 2026 (SI2026) are still open for 2 more weeks! The IUCN SSC Shark Specialist Group will be hosting the session: “Leveraging Important Shark and Ray Areas (ISRAs) for Policy Action.”

Book review: Shark tales from ancient seas www.cell.com/current-biol...

The earliest appearance of gigantic lamniform #sharks has now been pushed back by ~15 Ma (upper Aptian, ~115 Ma) with the discovery of enormous cardabiodontid shark remains from northern Australia.🦈🧪 www.nature.com/articles/s42...

🚨 Recruiting 12 PhD students for a new NSF-funded program at the University of Alaska Fairbanks College of Fisheries and Ocean Sciences! This program is for U.S. students who received an Honorable Mention on the NSF GRFP within the last 3 years. @uafairbanks.bsky.social www.uaf.edu/cfos/academi...

The Blue Food Futures Fellowship application is now open! Fellows receive 6 mo support at their home institution to address pressing issues in blue food + mentorship from a global blue research network + opportunities to present research at international fora ⬇️ More bluefood.earth/fellowships/

🦈 A new study indicates that deep-sea mining could threaten at least 30 species of sharks, rays and chimaeras, many of which are already at risk of extinction. #SharkConservation #Shark #DeepSea #DeepSeaMining #DefendTheDeep news.mongabay.com/2025/10/mini...

CSIRO is #hiring a Collection Manager for the Australian National Fish Collection 🐟 📍 Hobart, #Tasmania 💰 $96,000 - $109,000 🚨Deadline: 31 Oct 2025 👀 jobs.csiro.au/job/Hobart%2...

The Mexico 🇲🇽 government has implemented new protections for several species of Atlantic sharks, but conservationists have been quick to point out that the bans were required under international commitments adopted years ago. #SharkLeague 🦈 www.seafoodsource.com/news/environ...

New #sharkscience from @diegocardenosa.bsky.social and others. Ghosts of the current: environmental DNA assays to detect conservation priority areas for three critically endangered hammerhead sharks. doi.org/10.3389/fmar... @iucnshark.bsky.social

New #sharkscience from Hilary Lewis and others: Challenging traditional methods of age estimation: elemental and isotopic characterisation of speartooth shark Glyphis glyphis vertebrae. www.int-res.com/abstracts/me... @iucnshark.bsky.social @austsocfishbiol.bsky.social @mickgrant.bsky.social

Mexico has finally fulfilled its international commitments to protect Atlantic sharks 🦈 New domestic rules set science-based catch limits for blue & shortfin mako sharks, a long-overdue step toward sustainable fisheries under #ICCAT sharkleague.org/2025/10/16/b... #SharkConservation #SharkLeague

Happy #internationalsawfishday to all who celebrate.

100% endorse this travel advice from prior experience. And you you can duck around the corner for a quick glimpse of a stuffed dodo before heading back to Heathrow.

New #sharkscience from Shay Kashey. Guinean landing surveys of Bentfin devil rays add insight into threatened elasmobranch catch. link.springer.com/article/10.1... Lots of data on elasmobranch landings, including rhinorays. @mantatrust.bsky.social @danielfernan7.bsky.social @iucnshark.bsky.social

Important news for those tracking #30by30. @protectedplanet.bsky.social merging WDPA & WD-OECM into new 'World Database on Protected and Conserved Areas (WDPCA).' @unep.org @unbiodiversity.bsky.social www.protectedplanet.net/news-and-sto...

#DidYouKnow ? Shark reproductive rates and recovery potential are known to decline when depth increases & population depletion risks exist, even when exploitation (targeted or incidental) rates are low. — IPBES#DidYouKnow#SustainableUse Assessment Let's protect deep-sea sharks. 🦈

The IUCN Red List of Threatened Species has just been updated and now includes assessments of 1,266 species of sharks, rays, and chimaeras.

Read my review of John Long’s book The Secret History of Sharks in @currentbiology.bsky.social A fascinating read about the deep history of sharks, the scientists who study them, and the adventures they have in the quest to learn more. authors.elsevier.com/a/1luVG3QW8S...

Recently, 124 Important Shark and Ray Areas (ISRAs) were delineated for the European Atlantic 🦈 This effort had data contributions from 214 researchers, including ETN members! Many of these ISRAs were partially/ompletely supported with telemetry data, underscoring the importance of this information.

Calling all marine & freshwater sciences students 📣 @marinefreshwater.bsky.social has a new #StudentPrize! The first winner will be announced in 2027 to allow time for submissions and nominations. More details: www.publish.csiro.au/mf/forauthor... #MarineFreshwaterRes

In the Philippines, there are 10 designated ISRAs. Swipe left to learn more about the shark and ray species in these individual sites. © Marine Wildlife Watch of the Philippines #shark #ray #chimaera #ISRA #ISRAlOPH #SharksPH #ConservePHsharks #sharkada

"Overfishing the largest species in nearshore and pelagic habitats risks loss of ecomorphotypes and a 5 to 22% erosion of functional diversity." Ecological erosion and expanding extinction risk of sharks and rays Dulvy @nickdulvy.bsky.social et al 2024