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Chris Mull

@cgmull.bsky.social
83 followers 72 following 15 posts
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Reposted by Chris Mull
IUCN SSC Marine Conservation Committee (MCC) @sscmarine.bsky.social · 19/08/2026
NEW PUBLICATION ALERT Read the latest publication released by the IUCN SSC Shark Specialist Group on Important Shark and Ray Areas in Polar waters and how it can be integrated into conserving sharks, rays, and chimaeras in the region Read here: doi.org/10.1111/gcb....
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Amanda Arnold 🦈 @amandasodysseys.bsky.social · 13/07/2026
Most shark and ray species have <1% of their range covered by no-take MPAs. New open access in @consletters.bsky.social: Sharks, Rays, & MPAs: a global assessment of MPA coverage in national waters across species ranges tinyurl.com/SharkRayMPA @nickdulvy.bsky.social @jaymatsushiba.bsky.social
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Ivy Baremore, PhD @ivalina.bsky.social · 05/05/2026
I was supposed to present my research on deep-sea sharks in the western Caribbean Sea at #SI2026, but I was, er... let go from my job shortly before the conference and am not there. Since I gained a few followers from this, I thought I would share some of what I would have presented yesterday (1/9)
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Chris Mull @cgmull.bsky.social · 03/05/2026
Fantastic Sharkipedia workshop today at #SI2026 Lots of great discussions and ideas about how we can improve, especially for education and outreach. Thanks to all who attended and to @sharks-int.bsky.social for hosting us! #SharkConservationFund @saveourseas.bsky.social
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Reposted by Chris Mull
National Center for Ecological Analysis & Synthesis @nceas-ucsb.bsky.social · 01/04/2026
⏳ 2 weeks left → Morpho RFP closes April 15 5 PM PT | 7PM CDT 📅 Deadline: April 15 🔗 nceas.ucsb.edu/morpho #MorphoInitiative #EnvironmentalDataScience #ScienceForImpact #OpenCall #ScienceInServiceOfSolutions #AppliedScience
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IUCN SSC Shark Specialist Group @iucnshark.bsky.social · 02/04/2026
NEW PUBLICATION ALERT | The Unseen Crisis of Sharks and Rays in Senegal Read the publication here: doi.org/10.1002/ece3... #shark #ray #publication
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National Center for Ecological Analysis & Synthesis @nceas-ucsb.bsky.social · 17/02/2026
Join us TOMORROW for all your Morpho questions! 🦋
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National Center for Ecological Analysis & Synthesis @nceas-ucsb.bsky.social · 04/02/2026
🦋 Applications are LIVE for the Morpho Initiative 2026 RFP! Funding collaborative working groups advancing applied environmental science for real-world solutions. 📅 Deadline: April 15, 2026 (5 PM PT / 7 PM CDT) 🔗 nceas.ucsb.edu/morpho
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Nick Dulvy @nickdulvy.bsky.social · 22/01/2026
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.
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Nick Dulvy @nickdulvy.bsky.social · 22/01/2026
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.
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Colin Simpfendorfer @sharkcolin.bsky.social · 22/01/2026
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
aus01.safelinks.protection.outlook.com
Bending back the curve of shark and ray biodiversity loss - Nature Reviews Biodiversity
Global shark and ray populations have declined sharply, driven by expanding fisheries and inequitable gaps in catch, trade and distribution data. This Review assesses global status, highlights drivers...
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Alexa Fredston @afredston.bsky.social · 09/12/2025
in a week, I'll start reviewing applications for this postdoc. come work with me in Santa Cruz, CA on fitting Bayesian hierarchical models to whale tag and photo datasets. position starts in fall 2026. ask me questions and apply here: recruit.ucsc.edu/JPF02003
recruit.ucsc.edu
Fredston Lab: Postdoctoral Scholar
University of California, Santa Cruz is hiring. Apply now!
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Nathan Pacoureau @nathanpacoureau.bsky.social · 13/11/2025
Prêt·e à plonger dans la législation marine ? 🦈 Stage M2 : cartographie du cadre réglementaire français sur les requins, raies, et chimères. Candidature & infos : tinyurl.com/2647um47 #StageM2 #BiologieMarine #Conservation #DroitDeLEnvironnement
tinyurl.com
Stage de Master 2 : Cartographie analytique des règles de conservation et gestion des requins et raies et chimères (chondrichtyens) en France - sfecologie.org
Contexte Les chondrichtyens — requins, raies et chimères — sont menacés par la pêche ciblée et les captures accidentelles (prises accessoires). Malgré les engagements pris au niveau national, européen...
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Reposted by Chris Mull
Jessica Gephart @jagephart.bsky.social · 24/10/2025
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/
bluefood.earth
Fellowships | BFFP
Blue Food Futures Fellows research critical questions about blue foods, filling knowledge gaps and providing actionable insights for global food and climate initiatives.
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Alexa Fredston @afredston.bsky.social · 22/10/2025
POSTDOC JOB AD: I'm hiring a Bayesian ecologist to build a (IMO, extremely fun) model of humpback whale spatiotemporal dynamics in California 2-year position starting fall 2026. in-person in Santa Cruz; collab w with Mevin Hooten's lab at UT Austin. ask me Qs or apply: recruit.ucsc.edu/JPF02003
recruit.ucsc.edu
Fredston Lab: Postdoctoral Scholar
University of California, Santa Cruz is hiring. Apply now!
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Matias Braccini @matiasbraccini.bsky.social · 15/10/2025
Several years in the making but we managed to assess the risk to the sustainability of all sharks and rays (>100 species) interacting with fisheries in Western Australia: spoiler, the vast majority of species are doing well! onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Multidecadal Management Ensures High Sustainability and Low Risk in a Global Shark Biodiversity Hotspot
Overfishing continues to drive the decline of sharks and rays worldwide, contributing to the deterioration of their global conservation status. Effective fisheries management can prevent overfishing,....
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Aaron B. Judah🔱 @seaprinceaaron.bsky.social · 02/10/2025
🚨 NEW PUBLICATION 🚨 Today in @currentbiology.bsky.social, we found that 30 species of #sharks, #rays, and #chimaeras overlap with proposed #deepseamining in Areas Beyond National Jurisdiction #ABNJ - over 60% are already #threatened with #extinction 🦈 📸 Blue Planet Archive / Masa Ushioda
The Pygmy Shark (Euprotomicrus bispinatus), the world’s second smallest shark species and one of the species with a high overlap with proposed deep sea mining. Credit: Blue Planet Archive / Masa Ushioda.
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Chris Mull @cgmull.bsky.social · 02/10/2025
New paper led by @seaprinceaaron.bsky.social in @currentbiology.bsky.social looking at the threats deep sea mining poses for sharks, rays, and chimaeras. We found 30 species are threatened via various pathways including collector impact and plumes at depth and pelagic discharge plumes.
Figure 1: highlighting various pathways through which mining can impact sharks, rays, and chimaeras including collector impact and plumes, and discharge plumes.Figure 2: The diversity of sharks, rays, and chimaeras impacted by deep sea mining operations. Nearly 2/3 of these species are already at an elevated risk of extinction.
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Ivy Baremore, PhD @ivalina.bsky.social · 18/09/2025
I don't think many people realize that Canadian companies own something like 75% of the mines in the world.
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Valentina Di Santo @vdisanto.bsky.social · 10/09/2025
Apply for the Scripps Postdoctoral Fellowship! I'm looking to support a strong candidate in fish physiology and/or biomechanics. Deadline: Oct 9, 2025. Eligibility: PhD by Nov 30, 2026 with ≤3 years postdoc experience. 2 years, $74K salary, $6K research allowance 👉 apol-recruit.ucsd.edu/JPF04348 🧪 🐟
apol-recruit.ucsd.edu
Scripps Postdoctoral Scholar Award - 2026
University of California, San Diego is hiring. Apply now!
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Chris Mull @cgmull.bsky.social · 18/08/2025
Had a great time chatting to the Beyond Jaws podcast about shark and ray biodiversity and threats. Thanks for having me! youtu.be/9P1xnUmjJR0?...
youtu.be
Shark Science: How International Trade Fuels Unsustainable Shark and Ray Fisheries
YouTube video by Beyond Jaws Podcast
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Chris Mull @cgmull.bsky.social · 12/08/2025
New Paper led by @natklinard.bsky.social We lay out a framework for assessing the ecological roles of reef sharks (but widely applicable) incorporating movement, trophic/community, and life history/population dynamics. w/@johnwayne5.bsky.social and A MacNeil doi.org/10.1111%2Fbr...
doi.org
Defining ecological roles of sharks on coral reefs
Sharks have often been perceived to play a critical role in the dynamics of coral reef ecosystems globally. Yet, there is relatively little evidence to support this idea across all but a limited set ...
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Chris Mull @cgmull.bsky.social · 12/07/2025
Hot off the press in Fish and Fisheries, led by @cathorswill.bsky.social. Life history and management metric imputation of Rhino Rays. Imputed traits/metrics reduce uncertainty compared to using surrogate values from congeners. Important for highly threatened spp #AES25 doi.org/10.1111/faf....
doi.org
Imputation of Fisheries Reference Points for Endangered Data‐Poor Fishes, With Application to Rhino Rays
For data-limited fish species, sustainable management frequently relies on biological metrics that are derived from life-history trait data, as opposed to high-resolution time series of catch and abu....
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Colin Simpfendorfer @sharkcolin.bsky.social · 11/06/2025
New #sharkscience led by Vinay Udyawer Professional fishers’ knowledge informs distribution and interaction dynamics of Sawfish and River Sharks in coastal fishing grounds... Amazing insights from fisher interviews about their changing interactions through time link.springer.com/article/10.1...
link.springer.com
Professional fishers’ knowledge informs distribution and interaction dynamics of Sawfish and River Sharks in coastal fishing grounds of the Northern Territory, Australia - Maritime Studies
Through their time at sea professional fishers possess and obtain invaluable knowledge and insights into the behaviour, distribution, and abundance of both target and non-target species. Their observa...
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Save Our Seas Foundation @saveourseas.bsky.social · 14/05/2025
Applications for the SOSF Small Grant are open! We call on early-career scientists with projects focused on sharks, rays, skates, sawfishes & chimaeras to apply. This grant is designed to fund short-term projects (12-18 months) & small projects (average US$5,000). To apply: grants.saveourseas.com
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UC Davis Coastal and Marine Sciences Institute @ucdmarinescience.bsky.social · 12/04/2025
We are THISCLOSE to funding the Kendra Chan Bodega Marine Lab challenge, which funds life-changing research experiences for undergraduate students, no matter their financial situation, and honors Kendra's memory. Just 8 more gifts of any size before 5pm today will unlock $15,000: buff.ly/sVGlS6a
A portrait of Kendra Chan standing on the coast, laughing as the wind blows her hair.
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Nick Dulvy @nickdulvy.bsky.social · 05/12/2024
New #GlobalSharkTrends study published in @science.org reveals #overfishing has more than halved shark & ray populations over the past 50-years causing widespread erosion of ecological function and exceptionally high extinction risk 👉Full article bit.ly/GlobalSharkTrends 🧵1/20
Scalloped hammerhead sharks (Sphyrna lewini) IUCN Critically Endangered © Masayuki Agawa_Ocean Image Bank
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Francisco Rodriguez-Sanchez @frodsan.bsky.social · 29/11/2024
1/ Important read for anyone using, contributing, or building large databases by aggregating data sources. Discusses issues with data quality, duplication, credit attribution, etc, and includes recommendations for improvement doi.org/10.1111/gcb.... #ecopubs
Improper data practices erode the quality of global ecological databases and impede the progress of ecological research

The scientific community has entered an era of big data. However, with big data comes big responsibilities, and best practices for how data are contributed to databases have not kept pace with the collection, aggregation, and analysis of big data. Here, we rigorously assess the quantity of data for specific leaf area (SLA) available within the largest and most frequently used global plant trait database, the TRY Plant Trait Database, exploring how much of the data were applicable (i.e., original, representative, logical, and comparable) and traceable (i.e., published, cited, and consistent). Over three-quarters of the SLA data in TRY either lacked applicability or traceability, leaving only 22.9% of the original data usable compared with the 64.9% typically deemed usable by standard data cleaning protocols. The remaining usable data differed markedly from the original for many species, which led to altered interpretation of ecological analyses. Though the data we consider here make up only 4.5% of SLA data within TRY, similar issues of applicability and traceability likely apply to SLA data for other species as well as other commonly measured, uploaded, and downloaded plant traits. We end with suggested steps forward for global ecological databases, including suggestions for both uploaders to and curators of databases with the hope that, through addressing the issues raised here, we can increase data quality and integrity within the ecological community.
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Reader of Banned Books @readerofbannedbook.bsky.social · 26/11/2024
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Colin Simpfendorfer @sharkcolin.bsky.social · 18/11/2024
ICCAT again does NOT implement best practice "Fins Naturally Attached" rules thanks to just 2 of its members blocking widely supported efforts to get the measure implemented. Some other shark measures were adopted. Details in the link www.sharkleague.org/2024/11/18/u... #sharkconservation #shark
sharkleague.org
Unprecedented International Effort to Prevent Shark Finning Blocked by Japan & China - Shark League for the Atlantic and Mediterranean
ICCAT meeting ends in dramatic defeat of proposal to end at-sea fin removal while other shark safeguards advance Limassol, Cyprus. November 18, 2024. This year’s meeting of the International Commissio...
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