Dr. David Ebert and Andrew Lewin interview shark scientists and conservationists to find out the steps they took that lead them to study and work with sharks. Interviews include stories of field shenanigans; career choices and advice; and, the science of sharks that may or may not include great white sharks...mostly not.
Beyond Jaws: Exploring Shark Science and Conservation
Claim This Podcastby Speak Up For Blue
4.9(25 reviews)
149 episodes
Updated Weekly
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77
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Podcast Overview
Dr. David Ebert and Andrew Lewin interview shark scientists and conservationists to find out the steps they took that lead them to study and work with sharks. Interviews include stories of field shenanigans; career choices and advice; and, the science of sharks that may or may not include great white sharks...mostly not.
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🇺🇲
Publishing Since
7/13/2021
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Recent Episodes
August 11, 2026
Walking Sharks Explained: A PhD Candidate's Path to a New Species
<p class="font-claude-response-body break-words whitespace-normal" dir="ltr">Walking sharks are one of the strangest small predators on the reef: pectoral fins built for crawling across coral flats at low tide, distributions so narrow some species live in a single bay, and a family tree that's still being filled in. In this episode, Andrew Lewin and Dr. David Ebert are joined by Jess Blakeway, a PhD candidate at the University of the Sunshine Coast, whose research on the distribution, ecology, and biology of walking sharks (genus Hemiscyllium) in Papua New Guinea has already led to a new species discovery.</p> <p class="font-claude-response-body break-words whitespace-normal" dir="ltr">Jess walks through her path from volunteering with sea turtles in PNG to noticing a walking shark outside its known range, emailing shark scientist Christine Dudgeon out of the blue, and eventually joining her as a PhD student. That relationship led to the description of Hemiscyllium dudgeonae, or Dudgeon's walking shark, named in honor of her supervisor. Jess and the hosts also dig into why these sharks have such tiny, non-overlapping ranges, how researchers tell nearly identical-looking species apart using color pattern, genetics, and geography, and the ongoing mix-up between "zebra sharks" and "leopard sharks," which turn out to be the same animal at different life stages.</p> <p class="font-claude-response-body break-words whitespace-normal" dir="ltr">It's a fun, detail-rich conversation about what it actually looks like to find a new species in the field, what happens after that moment (specimen collection, museum deposits, taxonomic description), and what Jess has planned for her postdoc research.</p> <p class="font-claude-response-body break-words whitespace-normal" dir="ltr"><strong>Takeaways:</strong></p> <ul class= "[li_&]:mb-0 [li_&]:mt-1 [li_&]:gap-1 [&:not(:last-child)_ul]:pb-1 [&:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1" dir="ltr"> <li class= "font-claude-response-body whitespace-normal break-words pl-2"> Papua New Guinea and northern Australia are home to all 10 known species of walking shark, each with a highly restricted range shaped by deep-water barriers, freshwater outflows, and shallow-water habitat limits.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2">Jess Blakeway co-described Hemiscyllium dudgeonae, a newly recognized walking shark species named after her supervisor Christine Dudgeon.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2"> Because walking sharks look nearly identical morphologically, researchers rely on color pattern, genetics, and geography, not body shape, to tell species apart.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2"> Zebra sharks and leopard sharks are the same species (Stegostoma tigrinum): striped as juveniles, spotted as adults.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2">Some walking shark distributions overlap without the species actually co-occurring, raising open questions about how isolation and reef geography shaped their evolution.</li> </ul> <p><span class="s1">Connect with us:</span></p> <p><span class="s1">Website: <a href= "https://bit.ly/37TMqeK">https://bit.ly/37TMqeK</a><br /></span><span class="s1">Instagram: <a href="https://bit.ly/3eorwXZ">https://bit.ly/3eorwXZ</a><br /> YouTube: <a href= "https://www.youtube.com/@beyondjawspodcast7591">https://www.youtube.com/@beyondjawspodcast7591</a></span></p> <p><span class="s1">Dave: <br /> Website: <a href= "https://www.lostsharkguy.com/">https://www.lostsharkguy.com/</a><br /> Instagram: <a href= "https://bit.ly/3q1J9Q5">https://bit.ly/3q1J9Q5</a><br /> YouTube: <a href= "https://www.youtube.com/@lostsharkguy">https://www.youtube.com/@lostsharkguy</a></span></p> <p><span class="s1">Andrew:<br /> Website: <a href= "https://www.speakupforblue.com/">https://www.speakupforblue.com/</a><br /> </span><span class="s1">Instagram: <a href= "https://bit.ly/37g5WkG">https://bit.ly/37g5WkG</a><br /> YouTube: <a href= "https://www.youtube.com/@SpeakUpForBlueTV">https://www.youtube.com/@SpeakUpForBlueTV</a></span></p> <p> </p>
July 27, 2026
Inside Shark Week 2026: Jesse Colaizzi on Alien Sharks Untamed America
<p class="font-claude-response-body break-words whitespace-normal" dir="ltr" data-sourcepos="16:1-16:381;412-792">It's Shark Week season again, and Andrew Lewin and Dr. David Ebert are joined for the third year running by Jesse Colaizzi, an award-winning television documentary producer, senior editor, and director of photography who works closely with Forrest Galante. Jesse pulls back the curtain on how a Shark Week episode actually comes together, from scouting locations to the final cut.</p> <p class="font-claude-response-body break-words whitespace-normal" dir="ltr" data-sourcepos="18:1-18:644;794-1437">Jesse joins the show remotely from Gujarat, India, where he is showrunning and editing Vantara's Sanctuary Stories, before turning to his newest project, Alien Sharks: Untamed America, premiering Wednesday, July 29th on Discovery. Built around America's 250th anniversary, the episode traces a journey across the country in search of cryptic and lesser known sharks, including white sharks off Diablo Canyon, a California horn shark, a swell shark located after months of searching, a guitar fish, bonnethead sharks, a swarm of blacktip sharks, a rediscovered tagged sawfish with researcher Dean Grubbs, and a basking shark in Cape Cod Harbor.</p> <p class="font-claude-response-body break-words whitespace-normal" dir="ltr" data-sourcepos="20:1-20:658;1439-2096">Along the way, Jesse and the hosts dig into what editors notice that scientists and viewers often miss: coordinated hunting behavior in sharks, how white sharks react to a drone's shadow on the water, the technical tricks used to slow down fast-moving animals on camera, and how years of watching raw footage trained Jesse to read animal behavior the way a birder reads bird behavior. Jesse also shares stories from filming rescued and rehabilitated animals in India, the discipline it takes to run multiple shows at once, and why this year's episode leans into American wildlife, from bison to elk to the Statue of Liberty, rather than the usual landmarks.</p> <h3 class="text-text-100 mt-2 -mb-1 text-base font-bold" dir="ltr" data-sourcepos="22:1-22:18;2098-2115">Key Takeaways</h3> <ul class= "[li_&]:mb-0 [li_&]:mt-1 [li_&]:gap-1 [&:not(:last-child)_ul]:pb-1 [&:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1" dir="ltr" data-sourcepos="24:1-31:195;2117-3616"> <li class= "font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="24:1-24:215;2117-2331">Jesse Colaizzi is an award-winning producer, senior editor, and director of photography who works with Forrest Galante on Shark Week and Discovery Channel programming, including Extinct or Alive and Alien Sharks.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="25:1-25:177;2332-2508">Alien Sharks: Untamed America premieres Wednesday, July 29th and is built around an America 250 theme, spotlighting cryptic and lesser-known native sharks across the country.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="26:1-26:241;2509-2749">The team tracked white sharks, a California horn shark, leopard sharks, a swell shark, a guitar fish, bonnethead sharks, blacktip sharks, a sawfish tagged in partnership with researcher Dean Grubbs, and a basking shark in Cape Cod Harbor.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="27:1-27:168;2750-2917">Editors and camera crews rely on subtle behavioral cues, frame rate tricks, and instinct to capture usable footage of fast-moving, unpredictable animals in the wild.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="28:1-28:169;2918-3086">White sharks have been observed reacting to the shadow of a filming drone, a small but telling example of how visual and behavioral cues shape what ends up on screen.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="29:1-29:143;3087-3229">Sharks display coordinated group behavior when hunting, echoing patterns Dr. David Ebert has documented in his own research on pack hunting.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="30:1-30:192;3230-3421">Jesse is currently based in Gujarat, India, working on Vantara's Sanctuary Stories, a series focused on rescued and rehabilitated animals and the conditioning process used to care for them.</li> <li class= "font-claude-response-body whitespace-normal break-words pl-2" data-sourcepos="31:1-31:195;3422-3616">This year's episode centers the Statue of Liberty and iconic American wildlife such as bison and elk instead of typical landmark imagery, offering a nature-first take on the America 250 theme.</li> </ul> <p><span class="s1">Connect with us:</span></p> <p><span class="s1">Website: <a href= "https://bit.ly/37TMqeK">https://bit.ly/37TMqeK</a><br /></span><span class="s1">Instagram: <a href="https://bit.ly/3eorwXZ">https://bit.ly/3eorwXZ</a><br /> YouTube: <a href= "https://www.youtube.com/@beyondjawspodcast7591">https://www.youtube.com/@beyondjawspodcast7591</a></span></p> <p><span class="s1">Dave: <br /> Website: <a href= "https://www.lostsharkguy.com/">https://www.lostsharkguy.com/</a><br /> Instagram: <a href= "https://bit.ly/3q1J9Q5">https://bit.ly/3q1J9Q5</a><br /> YouTube: <a href= "https://www.youtube.com/@lostsharkguy">https://www.youtube.com/@lostsharkguy</a></span></p> <p><span class="s1">Andrew:<br /> Website: <a href= "https://www.speakupforblue.com/">https://www.speakupforblue.com/</a><br /> </span><span class="s1">Instagram: <a href= "https://bit.ly/37g5WkG">https://bit.ly/37g5WkG</a><br /> YouTube: <a href= "https://www.youtube.com/@SpeakUpForBlueTV">https://www.youtube.com/@SpeakUpForBlueTV</a></span></p> <p> </p>
July 14, 2026
She Spent Years Tracking Sharks in Crocodile-Infested Rivers
<p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="35:1-35:670;1876-2545">Dr. Julia Constance is back on Beyond Jaws, and this time she's joining hosts Andrew Lewin and Dr. David Ebert as Dr. Constance. Julia returns fresh off completing her PhD on the natural mortality and movement ecology of two of the world's least understood sharks: the speartooth shark and the northern river shark, both found almost nowhere outside northern Australia and southern Papua New Guinea. Using a long-running acoustic telemetry dataset built by her supervisor since 2013, Julia tracked around 200 tagged sharks across Northern Territory river systems, some for up to a decade, to understand how these animals move, where they go, and what puts them at risk.</p> <p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="37:1-37:575;2547-3121">The conversation digs into just how little is still known about these sharks once they leave the rivers as adults. Julia explains how individuals vanish from the tracking data for years at a time before reappearing at a river mouth, with almost no confirmed sightings of adults in the open marine environment. She and the hosts also compare the relatively stable status of Australia's river sharks to their close relative, the Ganges shark, a species so rare and poorly documented that even basic facts about its biology are borrowed from research on its Australian cousins.</p> <p class="font-claude-response-body break-words whitespace-normal" data-sourcepos="39:1-39:536;3123-3658">Along the way, Julia and Andrew share what it's actually like to do this fieldwork: murky, chocolate colored water, gear retrieval by feel instead of by sight, and working in rivers that hold the largest population of saltwater crocodiles on the planet. The episode also touches on a real and growing concern: proposed water resource development on the Adelaide River, home to the largest known population of speartooth sharks anywhere in the world, and what that could mean for a species already living in an extremely narrow habitat.</p> <p><span class="s1">Connect with us:</span></p> <p><span class="s1">Website: <a href= "https://bit.ly/37TMqeK">https://bit.ly/37TMqeK</a><br /></span><span class="s1">Instagram: <a href="https://bit.ly/3eorwXZ">https://bit.ly/3eorwXZ</a><br /> YouTube: <a href= "https://www.youtube.com/@beyondjawspodcast7591">https://www.youtube.com/@beyondjawspodcast7591</a></span></p> <p><span class="s1">Dave: <br /> Website: <a href= "https://www.lostsharkguy.com/">https://www.lostsharkguy.com/</a><br /> Instagram: <a href= "https://bit.ly/3q1J9Q5">https://bit.ly/3q1J9Q5</a><br /> YouTube: <a href= "https://www.youtube.com/@lostsharkguy">https://www.youtube.com/@lostsharkguy</a></span></p> <p><span class="s1">Andrew:<br /> Website: <a href= "https://www.speakupforblue.com/">https://www.speakupforblue.com/</a><br /> </span> <span class="s1">Instagram: <a href= "https://bit.ly/37g5WkG">https://bit.ly/37g5WkG</a><br /> YouTube: <a href= "https://www.youtube.com/@SpeakUpForBlueTV">https://www.youtube.com/@SpeakUpForBlueTV</a></span></p>
149 total episodes available
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