Beyond All the Sharks

With its major domestic and international fishing fleets and cultural emphasis on seafood, Japan's policies and practices ripple across every ocean. Understanding how sharks move through these, and neighboring, markets, kitchens, and even pet food is essential to addressing the global shark mortality crisis.

In this episode, we sit down with Dr. Shelley Clarke, an independent fisheries consultant with decades of experience working inside the systems that govern shark catch and trade worldwide. From her early career as a fisheries observer to her ongoing work with Regional Fisheries Management Organizations (RFMOs) , Shelley offers a rare insider perspective on how shark policy succeeds and where it falls short.

Join us for a nuanced, honest look at one of the most complex fronts in global shark conservation and what everyday people can do to push things forward.

Thanks to:📸 Andy Murch – www.sharksandrays.org | YouTube: @bigfishexpeditions8233 | IG: @bigfishexpeditions📸 Shelley Clarke

🔗 Follow us for more shark science and ocean stories:📸 Instagram: @shark_docs🎯 www.sharkdocs.org

OUTLINE

0:00 – Intro to Japan, Global Shark Conservation, & Dr. Shelley Clarke

02:45 – Fisheries Observer Program & Career Path

08:55 – Japanese Culture & Relationship to Seafood and Conservation

22:19 – Japan's Diving Industry & Wildlife

27:22 – Healthy Seafood: Mercury & Fukushima

29:29 – Shark In Food for People & Pets

32:30 – Cultural Values towards Seafood

35:50 – Shark Finning, No-Retention Measures, Transshipment, & Mortality

47:10 – Shark Meat, Landings Records & Reporting

50:05 – Illegal, Unreported, and Unregulated Fishing (IUU)

53:30 – Shark Trade & CITES

59:35 – Solving Excessive Shark Mortality

1:05:49 – Making a Difference in Everyday Life

1:08:30 – Inner Workings of RFMO Meetings

1:16:20 – Small Steps Towards Conservation Success

1:20:30 – Research Advice for Grad Students

1:22:35 – Outro

Relevant Literature & Resources

🌐 Guest

Dr. Shelley Clarke – www.sasamaconsulting.com

⚠️ Conservation Status

Dulvy et al., 2024 – https://www.science.org/doi/abs/10.1126/science.adn1477

Dulvy et al., 2026 – https://www.nature.com/articles/s44358-025-00120-2

🚫 Shark Fin Bans & No-Retention

Ferretti et al., 2020 – https://doi.org/10.1111/conl.12708

Worm et al., 2024 – https://www.science.org/doi/abs/10.1126/science.adf8984

Feitosa et al., 2025 – https://doi.org/10.1111/faf.12892

Gilman et al., 2016 – https://doi.org/10.1002/aqc.2599

Tolotti et al., 2015 – https://doi.org/10.1016/j.gecco.2015.05.003

Clarke et al., 2012 – https://doi.org/10.1111/j.1523-1739.2012.01943.x

🔍 Shark Fins, Trade, & CITES

Cardeñosa et al., 2018 – https://doi.org/10.1111/conl.12457

Cardeñosa et al., 2023 – https://doi.org/10.1111/acv.12864

Cardeñosa, 2019 – https://doi.org/10.1007/s10592-019-01221-0

Fields et al., 2025 – https://link.springer.com/article/10.1007/s10592-025-01714-1

Fowler et al., 2021 – https://bfn.bsz-bw.de/frontdoor/deliver/index/docId/7/file/Skript607.pdf

Bond et al., 2025 – https://doi.org/10.1016/j.marpol.2025.106733

Clarke et al., 2006 – https://doi.org/10.1111/j.1461-0248.2006.00968.x

🥩 Shark Meat Trade

Ospina-Álvarez et al., 2025 – https://doi.org/10.1016/j.marpol.2025.106659

MacNeil et al., 2025 – https://www.biorxiv.org/content/10.1101/2025.04.24.650194v1.abstract

Okes & Sant, 2019 – https://sharks.panda.org/images/downloads/327/TRAFFIC_Top_20_Shark_Catchers__Traders_2019_1.pdf

Ryburn et al., 2025 – https://doi.org/10.3389/fmars.2025.1604454

Dent and Clarke, 2015 – https://www.proquest.com/openview/3b5c990099f5140bc44e63e7e691e271/1?pq-origsite=gscholar&cbl=237320

🎣 Bycatch & Fisheries Management

Crespo et al., 2024 – https://doi.org/10.1111/cobi.14324

Cronin et al., 2023 – https://doi.org/10.1111/faf.12710

Galland et al., 2018 – https://doi.org/10.1016/j.marpol.2017.10.029

The Galápagos is one of the world’s most iconic marine ecosystems, but the sharks and other megafauna that roam these waters don’t recognize borders. Many species move across thousands of kilometers, linking Ecuador, Costa Rica, Panama, Colombia, and beyond. Understanding those movements is vital for designing effective marine reserves while supporting sustainable fisheries.

In this episode, MigraMar’s Dr. Alex Hearn and Dr. César Peñaherrera-Palma break down decades of tagging research, remote-video surveys, and long-term ecological work that reveal where sharks go, how they move, and how they use “swimways” through the Eastern Tropical Pacific. Their science helped drive the creation of the Hermandad Marine Reserve—an important milestone for migratory corridors—but the work is far from finished.

Even with new protections, major threats remain. Join us to learn more!

🔗 Follow for more shark science and ocean stories:
📸 Instagram: @shark_docs
🎯 www.sharkdocs.org

Episode Guide
00:00 Intro
03:06 Darwin’s Arch to Darwin’s Pillars
05:15 Tiger sharks, killer whales & currents
29:58 Galápagos as a shark hotspot
36:49 Shark Highway of the EPO
41:02 Movement variability across species
46:30 Protecting sharks from fishing
52:14 Hermandad & Ecuador’s debt swap
54:20 Sustainable fishing & longline ban
01:01:00 Fisheries & management
01:09:35 Supporting healthy oceans
01:11:48 Shark Count Galapagos App
01:14:19 Outro

📄 Relevant Literature and Publications
Migramar – https://migramar.org/
Dr. Peñaherrera-Palma – https://scholar.google.com/citations?user=A09SYrkAAAAJ
Dr. Hearn – https://scholar.google.com/citations?user=96n4YGQAAAAJ

🐺 Sharks of Darwin & Wolf
Salinas-de-Leon 2016 – https://peerj.com/articles/1911/
Acuna-Marrero 2014 – https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0115946&type=printable
Hearn 2016 – https://link.springer.com/article/10.1007/s00227-016-2991-y
Hearn 2013 – https://link.springer.com/chapter/10.1007/978-3-319-02769-2_2

🐋 Orca–Shark Interactions
Terrapon 2024 – https://onlinelibrary.wiley.com/doi/pdf/10.1111/aje.13342
Towner 2021 – https://doi.org/10.2989/1814232X.2022.2066723
Ford 2011 – https://www.int-res.com/articles/ab2010/11/b011p213.pdf
Pancaldi 2024 – https://doi.org/10.3389/fmars.2024.1448254

📚 Shark Movements & Connectivity (EPO)
Hearn 2010 – https://doi.org/10.1007/s00227-010-1460-2
Ketchum 2014 – https://doi.org/10.1007/s00227-014-2393-y
Nalesso 2019 – https://doi.org/10.1371/journal.pone.0213741
Salinas-de-León 2025 – https://link.springer.com/article/10.1007/s10641-025-01717-4
Klimley 2022 – https://link.springer.com/article/10.1007/s10641-021-01204-6
Cambra 2021 – https://doi.org/10.1371/journal.pone.0244343
McKinley 2025 – https://doi.org/10.1371/journal.pone.0334164

🛡️ Important Shark & Ray Areas
Peñaherrera-Palma 2018 – https://seaturtles.org/wp-content/uploads/2020/08/Justificacio%CC%81n-Biolo%CC%81gica-Migravi%CC%81a-C-G_web.pdf
Nursery Complex – https://sharkrayareas.org/portfolio-item/galapagos-nursery-complex-isra/
Galapagos Platform – https://sharkrayareas.org/portfolio-item/galapagos-platform-isra/
Darwin-Wolf – https://sharkrayareas.org/portfolio-item/darwin-wolf-isra/
Paramount Seamount – https://sharkrayareas.org/portfolio-item/paramount-seamount-isra/
Cocos–Galápagos Swimway – https://sharkrayareas.org/portfolio-item/cocos-galapagos-swimway-isra/

⚠️ Current Threats & Fisheries Pressure
Peñaherrera-Palma 2025 – https://link.springer.com/article/10.1007/s10641-025-01710-x
Chinacalle-Martínez 2024 – https://doi.org/10.1371/journal.pone.0282374
Peñaherrera-Palma 2018 – https://doi.org/10.1016/j.biocon.2018.07.004
Hearn & Bucaram 2025 – https://doi.org/10.3389/fmars.2025.1484989
Worm 2024 – https://doi.org/10.1126/science.adf8984

🧭 Regional Policy & Sustainable Fisheries
Hearn 2008 – https://doi.org/10.1016/j.ocecoaman.2008.06.009
Tanner 2021 – https://doi.org/10.1016/j.marpol.2021.104665
Galapagos Life Fund – https://galapagoslifefund.org.ec/

🌍 The Bahamas: A Shark Sanctuary Under Threat

Chris and Brendan join their friend and colleague Dr. Matt Smukall, Director of the Bimini Biological Field Station @BiminiSharkLab to discuss all things shark and ray in The Bahamas, including the ongoing battle to save the mangrove forests of North Bimini from unsustainable, short-sighted development. These mangroves provide an outsized benefit to local wildlife, ecotourism, and fisheries in the western Bahamas, and trading them for a golf course or a few condos is a terrible mistake.

Thanks to:

📸 @Sharkman_Dan – Filming and Editing

📸 Wyatt Albert @wadewithwyatt - Photo and Video Contributions

🔗 Follow us for more shark science and ocean stories:

📸 Instagram: @shark_docs

🎯 Website: www.sharkdocs.org

Relevant Literature & Resources

🏫 Bimini Research

Bimini Shark Lab – https://www.biminisharklab.com/

🦈 Shark Management and Abundance in The Bahamas

Kessel et al., 2016 – https://doi.org/10.1111/jfb.12987

Hansell et al., 2018 – https://doi.org/10.1016/j.fishres.2017.09.016

Talwar et al., 2020 – https://www.doi.org/10.1016/j.fishres.2020.105683

Smukall et al., 2022 – https://doi.org/10.1111/jfb.15067

🔬 Species-Specific Research

Caribbean reef shark IUCN Red List assessment:

Carlson et al., 2019 – https://www.iucnredlist.org/species/60217/3093780

Caribbean Reef Shark life history:

Talwar et al., 2022 – https://link.springer.com/article/10.1007/s00227-022-04044-9

🌊 Shark and Ray Abundance

MacNeil et al., 2020 – https://www.nature.com/articles/s41586-020-2519-y

Clementi et al., 2021 – https://www.int-res.com/abstracts/meps/v661/p175-186/

Simpfendorfer et al., 2023 – https://www.science.org/doi/abs/10.1126/science.ade4884

Goetze et al., 2024 – https://www.nature.com/articles/s41559-024-02386-9

🌍 Population Declines and Management

Ward-Paige et al., 2010 – https://doi.org/10.1371/journal.pone.0011968

Talwar et al., 2022 – https://doi.org/10.1111/faf.12675

Pacoureau et al., 2023 – https://doi.org/10.1073/pnas.2216891120

🌴 North Bimini Mangroves

Jennings et al., 2008 – https://link.springer.com/article/10.1007/s10641-008-9357-3

DiBattista et al., 2011 – https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/j.1752-4571.2010.00125.x

Jennings et al., 2012 – https://link.springer.com/article/10.1007/s11852-012-0211-6

Arkema et al., 2017 – https://naturalcapitalproject.stanford.edu/sites/g/files/sbiybj25256/files/media/file/natcap_economicvalueofmarineprotectedareas_0.pdf

Beal et al., 2021 – https://www.sciencedirect.com/science/article/pii/S1470160X21004581

Kanno et al., 2023 – https://www.int-res.com/abstracts/meps/v724/p167-183/

Kressler et al., 2024 – https://www.sciencedirect.com/science/article/pii/S1470160X24006964

🌐 Habitat Conservation Resources

North Bimini Marine Reserve – https://www.biminisharklab.com/north-bimini-marine-reserve

🌍 Global Habitat Loss

Waycott et al., 2009 – https://doi.org/10.1073/pnas.0905620106

Polidoro et al., 2010 – https://doi.org/10.1371/journal.pone.0010095

Buelow et al., 2022 – https://doi.org/10.1016/j.cub.2022.02.013

💰 Shark Economy

Haas et al., 2017 – https://doi.org/10.1016/j.biocon.2017.01.007

🌊 Ecosystem Values

Harborne et al., 2006 – https://doi.org/10.1016/S0065-2881(05)50002-6

🦈 Shark and Ray Interactions

Maljković & Coté, 2011 – https://doi.org/10.1016/j.biocon.2010.11.019

Hammerschlag et al., 2012 – https://doi.org/10.1111/j.1365-2435.2012.01973.x

Heim et al., 2021 – https://doi.org/10.3389/fmars.2021.628469

Heim et al., 2024 – https://doi.org/10.1016/j.anbehav.2024.08.012

🌐 Shark Diving Management

Gallagher et al., 2015 – https://doi.org/10.1016/j.biocon.2015.02.007

Healy et al., 2020 – https://doi.org/10.1016/j.marpol.2020.103964

🐟 Shark Homing Behavior

Edrén & Gruber, 2005 – https://doi.org/10.1007/s10641-004-2583-4

Feldheim et al., 2014 – https://doi.org/10.1111/mec.12583

📚 Internships

https://www.biminisharklab.com/internships

#AllTheSharks #netflix #wildlife #ocean #conservation #shark #ray

South Africa is a global hotspot for shark and ray biodiversity — home to over 200 species, including many found nowhere else on Earth. In this episode of Beyond All the Sharks, Chris & Brendan team up with their friend and fellow Shark Doc, Dr. Alison Kock of South African National Parks (SANParks), to dive into the science, conservation, and management of these incredible animals along South Africa’s ~3,000 km coastline.

From white sharks in False Bay to endemic catsharks and shysharks, Dr. Kock has dedicated her career to protecting species that play a critical role in ocean ecosystems.

Thanks to:

📸 Andy Murch – www.sharksandrays.org | YouTube: @bigfishexpeditions8233 | IG: @bigfishexpeditions

📸 Morne Hardenberg – @mornehardenberg

📸 Mark Van Coller – @AtlanticEdgeFilms

📸 Dr. Alison Kock – @alison_kock

Resources & References

🌍 South Africa National Parks

SANParks – https://www.sanparks.org/?home

👩‍🔬 Dr. Kock's story

Save Our Seas Foundation – https://saveourseas.com/project-leader/alison-kock/

📊 IUCN Red List Assessment for White Shark

Rigby et al., 2022 – https://www.iucnredlist.org/species/3855/212629880

📈 Preliminary recovery of White Shark in the NW Atlantic

Curtis et al., 2014 – https://doi.org/10.1371/journal.pone.0099240

🌊 White Shark habitat shift towards Port Elizabeth, South Africa

Bowlby et al., 2023 – https://www.sciencedirect.com/science/article/pii/S1470160X23008622

🌐 Biodiversity & conservation of sharks in South Africa

Ebert & Van Hees, 2014 – https://doi.org/10.2989/1814232X.2015.1048730

Pollom et al., 2024 – https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0306813

🐠 South African marine biodiversity & environment

Griffiths et al., 2010 – https://doi.org/10.1371/journal.pone.0012008

🐟 Catsharks / Shysharks of South Africa – Population status

Natal Shyshark – https://www.iucnredlist.org/species/161667/124524866

Brown Shyshark – https://www.iucnredlist.org/species/39346/124403821

Puffadder Shyshark / Happy Eddie – https://www.iucnredlist.org/species/39345/124403633

Dark Shyshark – https://www.iucnredlist.org/species/161650/124521775

Pyjama Shark – https://www.iucnredlist.org/species/39348/124404008

Leopard Catshark – https://www.iucnredlist.org/species/161515/124498131

🦑 Endemic sharks of South Africa

Cliff & Olbers, 2022 – https://sharksunderattackcampaign.co.za/wp-content/uploads/2023/03/2023_01_17_WILDOCEANS-endemic-and-threatened-sharks-species-reports.pdf

🛡️ Marine protected areas & catsharks / shysharks

Albano et al., 2021 – https://doi.org/10.1016/j.biocon.2021.109302Cortelezzi et al., 2022 – https://doi.org/10.1016/j.jenvman.2022.115691

📖 Select work on White Sharks from Dr. Kock

Klimley et al., 2024 – https://link.springer.com/article/10.1007/s10641-024-01584-5

Bowlby et al., 2023 – https://www.sciencedirect.com/science/article/pii/S1470160X23008622

Towner et al., 2022 – https://doi.org/10.2989/1814232X.2022.2066723

Towner et al., 2022 – https://pmc.ncbi.nlm.nih.gov/articles/PMC10078210/

Kock et al., 2022 – https://doi.org/10.3389/fmars.2022.811985

Kock et al., 2018 – https://link.springer.com/article/10.1186/s40462-018-0125-5

Hewitt et al., 2017 – https://link.springer.com/article/10.1007/s10641-017-0679-x

🔄 Effect of White Shark absence on other species / ecological role

Dedman et al., 2024 – https://doi.org/10.1126/science.adl2362

👀 Shark Spotters

Shark Spotters – https://sharkspotters.org.za/

Engelbrecht et al., 2017 – https://doi.org/10.1371/journal.pone.0185335

⚖️ Human–shark conflict & conservation

Atkins et al., 2023 – https://www.sciencedirect.com/science/article/pii/S0308597X23002956

Sheridan et al., 2021 – https://doi.org/10.1016/j.marpol.2021.104633

Simpfendorfer et al., 2021 – https://doi.org/10.3389/fcosc.2021.692767

📝 South African shark conservation priorities

IUCN, 2024 – Global Shark Status Report (South Africa) – https://portals.iucn.org/library/sites/library/files/documents/2024-024-En_part_6.pdf

In this episode of Beyond All the Sharks, marine ecologists Dr. Chris Malinowski and Dr. Brendan Talwar join fellow Shark Doc Dr. Heather Middleton on Heron Island—a remote research station nestled into Australia’s Great Barrier Reef.

Together, they explore how this iconic island has evolved from a turtle cannery into a hotspot for shark and ray science and what it teaches us about biodiversity, adaptation, and the urgent need for conservation. From the shallow reef flats to the deep impacts of climate change, this is a deep dive into one of the most vibrant marine ecosystems on the planet.

🦈 In this episode, we cover:
– The transformation of Heron Island from turtle cannery to protected Green Zone
– Ray and shark mating behavior, olfactory communication, and reproductive strategies
– Epaulette sharks and their chemical cues: what pheromones can tell us about courtship
– Research at the Heron Island Research Station and its role in global reef science
– How climate change is affecting shark movement, mating, and survival
– The importance of protected zones in the Great Barrier Reef Marine Park

🎧 Whether you're a marine biologist, conservationist, diver, or shark enthusiast, this episode offers fresh perspectives and emerging science from one of the world’s most studied reefs.

🎙️ About our guest:

Dr. Heather Middleton is a marine scientist and shark researcher based at the Heron Island Research Station. Her recent work focuses on the chemical ecology of elasmobranchs, including groundbreaking research on pheromones in epaulette sharks. She combines field ecology with behavioral studies to better understand how marine species interact, reproduce, and respond to environmental change.

📸 Special thanks to: Andy Murch – www.sharksandrays.org | YouTube: @bigfishexpeditions8233 | Instagram: @bigfishexpeditions; Dr. Heather Middleton, Dr. Lawson (@_alinya), and Dr. Wheeler for their photos and videos; and Dive Spear and Sport – for supporting our dive team at Heron Reef

📚 Further Reading & Resources
For full references and links to the scientific literature mentioned in this episode, visit our YouTube channel @SharkDocs

🔗 Follow us for more shark science and conservation:
📸 Instagram: @shark_docs
▶️ YouTube: @SharkDocs
🎯 Linktree: https://linktr.ee/shark_docs

🎧 Available wherever you get your podcasts.

#AllTheSharks #SharkPodcast #SharkScience #Elasmobranchs #MarineBiology #OceanConservation #GreatBarrierReef #SharkWeek #ClimateChange #HeronIsland #BeyondAllTheSharks

Beyond All the Sharks is the official companion podcast to the Netflix series All the Sharks. Want to learn more after watching the show?

Join hosts Dr. Chris Malinowski and Dr. Brendan Talwar as they connect with their new friends and fellow Shark Docs, Arzucan Zuzu Askin and Ahmed Ricky Mohamed from the Miyaru Programme in Fuvamulah, Maldives. Together, they explore shark and ray conservation, dive ecotourism, sustainable fisheries, and the evolving perceptions and uses of sharks in this vibrant region of the Indian Ocean.

🌊 In this episode, we cover:

– Shark and ray research and conservation in the Maldives

– The role of dive ecotourism and sustainable practices

– Deep-sea biology and shark ecology

– Fisheries impacts and community engagement

– Changing local and global attitudes toward sharks

🎧 Whether you're a scientist, conservationist, diver, or curious explorer, this episode dives into the connections between culture, conservation, and research in the Maldives—one of the most important and rapidly changing shark hotspots in the world.

🎙️ About our guests:

Arzucan “Zuzu” Askin is a National Geographic Explorer, conservation scientist, and co-founder of the Miyaru Programme. Trained at Oxford’s Seascape Ecology Lab, she specializes in shark-human interactions and the social dimensions of shark conservation.

Ahmed “Ricky” Mohamed is an underwater photographer, videographer, and dive shop owner based in Fuvahmulah. As part of Miyaru’s media storytelling team, he documents local shark populations and helps share the island’s conservation efforts with global audiences through visual media.

📸 Special thanks to:

– Andy Murch (https://www.sharksandrays.org | YouTube: @bigfishexpeditions8233 | Instagram: @bigfishexpeditions)
– Arzucan Zuzu Askin, Ahmed Ricky Mohamed, and Lorea Dandoy for their photos and videos
– Pelagic Divers Fuvahmulah and owner Ahmed Inah (@inah_shark) for supporting our team both underwater and on land (https://www.pelagicdiversfuvahmulah.com/)

📚 Further Reading & Resources

For full references, links, and more scientific resources mentioned in this episode, visit our YouTube channel @SharkDocs.

🔗 Follow us for more shark science and ocean stories:

📸 Instagram: @shark_docs

▶️ YouTube: @SharkDocs

🎯 Linktree: linktr.ee/shark_docs

🎧 Available wherever you get your podcasts.

#AllTheSharks #SharkPodcast #SharkScience #Elasmobranchs #MarineBiology #OceanConservation #Maldives #SharkWeek #ClimateChange #BeyondAllTheSharks #MarineConservation #SharkResearch #OceanScience #WildlifePodcast #CoralReefProtection