All Creatures Podcast

Chris and Angie return after a National Geographic event with photographer Amy Vitale and introduce an episode on sand dollars, prompted by Angie finding live sand dollars with her family and wanting answers to her kids’ questions.

They describe sand dollars as flat, burrowing echinoderms with an internal calcium-carbonate “test,” tiny spines and cilia, petaloid patterns with tube feet for respiration, slow movement and burrowing.

They also discuss global distribution, size variation, feeding as deposit feeders. Major threats include bottom trawling/dredging and ocean acidification; they suggest using Monterey Bay Aquarium’s Seafood Watch and highlight the National Marine Sanctuary Foundation and practical pollution-reduction steps.

Timeline

00:00 Welcome Back Nat Geo
00:55 Why Sand Dollars
05:09 What They Look Like
09:20 Sizes And Range
11:43 Why They Matter
17:16 Threats And Trawling
25:06 What You Can Do
28:18 Evolution And Classification
33:40 Movement And Lifespan
37:00 Sand Dollar Skeleton Test
38:37 Top View Flower Pores
42:11 Tube Feet Water Vascular
44:28 Missing Eyes Brain Blood
48:18 Predators And Defense
50:08 How Sand Dollars Eat
54:28 Poop And Nutrient Cycling
56:41 Behavior Chemical Cues
01:00:53 Reproduction Life Cycle
01:09:44 Conservation And Curiosity

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Another thank you to all our Patreon supporters. You too can join for one cup of "good" coffee a month. With your pledge you can support your favorite podcast on Patreon and give back to conservation. With the funds we receive each month, we are have been sending money to conservation organizations monthly. We now send a check to every organization we cover, as we feel they all are deserving of our support. Thank you so much for your support and for supporting animal conservation.

Please considering supporting us at Patreon HERE.

We also want to thank you to all our listeners. We are giving back to every conservation organization we cover and you make that possible. We are committed to donating large portions of our revenue (at minimum 25%) to every organization we cover each week. Thank you for helping us to grow, and for helping to conserve our wildlife.

Please contact us at advertising@airwavemedia.com

if you would like to advertise on our podcast

Learn more about your ad choices. Visit megaphone.fm/adchoices

Imagine a shark swimming through the Arctic today that was already alive before the United States existed. Greenland sharks are thought to be the longest-lived vertebrates on Earth, with research suggesting they can live for around 400 years—and potentially longer. Even more astonishing, females may take approximately 150 years to reach reproductive maturity. These slow-growing inhabitants of the cold North Atlantic and Arctic oceans live on a timescale that is almost impossible to comprehend.

We’re revisiting this classic All Creatures Podcast episode following renewed headlines about a controversial proposal to kill 1,000 Greenland sharks. Earlier this year, Greenland’s Avannaata municipality approved a bounty scheme in response to fishers’ concerns about damaged equipment and lost catch. The scheme was subsequently dropped because the municipality lacked the legal authority to implement it, but the debate over killing these extraordinary animals continues.

Greenland sharks are classified as Vulnerable on the IUCN Red List. Historically hunted for their liver oil, they now face ongoing threats from accidental capture in fishing gear, while climate change may alter their Arctic habitat. Their population size remains poorly understood, and their exceptionally slow growth and late maturity make them particularly susceptible to overfishing. Join us as we revisit one of the ocean’s most remarkable animals—and why protecting a creature whose life spans centuries requires thinking far beyond our own lifetimes.

==

Another thank you to all our Patreon supporters. You too can join for one cup of "good" coffee a month. With your pledge you can support your favorite podcast on Patreon and give back to conservation. With the funds we receive each month, we are have been sending money to conservation organizations monthly. We now send a check to every organization we cover, as we feel they all are deserving of our support. Thank you so much for your support and for supporting animal conservation.

Please considering supporting us at Patreon HERE.

We also want to thank you to all our listeners. We are giving back to every conservation organization we cover and you make that possible. We are committed to donating large portions of our revenue (at minimum 25%) to every organization we cover each week. Thank you for helping us to grow, and for helping to conserve our wildlife.

Please contact us at advertising@airwavemedia.com

if you would like to advertise on our podcast

Learn more about your ad choices. Visit megaphone.fm/adchoices

From the archives of All Creatures Podcast, we're revisiting our inspiring 2021 conversation with Dr. Paula Kahumbu, one of Africa's most influential wildlife conservationists, a National Geographic Explorer, and recipient of the prestigious Whitley Gold Award.

As a leading voice in elephant conservation, Dr. Kahumbu has dedicated her career to protecting Africa's wildlife, combating the illegal ivory trade, and inspiring a new generation of conservationists. Through her leadership at WildlifeDirect and her groundbreaking television series Wildlife Warriors, she has helped bring African conservation stories to millions while championing local communities and African-led conservation efforts.

Fresh off our own live podcast event at National Geographic, we're celebrating another extraordinary Explorer whose passion, determination, and leadership remind us that protecting wildlife begins with empowering the people who share their world.

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Chris recounts the recovery of New Zealand’s Chatham black robin (karure/keruru), an island species devastated by habitat clearing and introduced predators like rats and cats, until its range shrank to tiny Mangere Island.

Numbers fell from 18 birds in 1972 to seven in 1976, then to five by 1980 with only one breeding female, “Old Blue,” paired with “Old Yellow,” leaving the species’ future dependent on her.

Chris tells the story of how conservationists and the New Zealand Wildlife Service team, led by figures like Don Merton, combined translocation, predator control, habitat restoration (including planting about 120,000 trees), and pioneering cross-fostering led to this species survival.

Timeline

00:00 Welcome and Setup
00:59 Island Origins and Threats
02:58 Collapse to Seven Birds
05:12 Only Five Left
08:23 Old Blue Last Female
12:06 Why Every Egg Matters
16:49 Radical Egg Moving
18:31 Cross Fostering Breakthrough
23:07 Habitat and Predator Control
27:37 Numbers Rebound
30:52 Hope and Wider Lessons
33:23 Ongoing Work Today
36:05 Northern White Rhino Parallel
37:41 Final Takeaway and Hope

==

Another thank you to all our Patreon supporters. You too can join for one cup of "good" coffee a month. With your pledge you can support your favorite podcast on Patreon and give back to conservation. With the funds we receive each month, we are have been sending money to conservation organizations monthly. We now send a check to every organization we cover, as we feel they all are deserving of our support. Thank you so much for your support and for supporting animal conservation.

Please considering supporting us at Patreon HERE.

We also want to thank you to all our listeners. We are giving back to every conservation organization we cover and you make that possible. We are committed to donating large portions of our revenue (at minimum 25%) to every organization we cover each week. Thank you for helping us to grow, and for helping to conserve our wildlife.

Please contact us at advertising@airwavemedia.com

if you would like to advertise on our podcast

Learn more about your ad choices. Visit megaphone.fm/adchoices

What kind of animal can see light we cannot and strike with enough force to crack a crab’s shell? In this classic episode from 2022, Chris and Angie meet the mantis shrimp: a small marine predator with extraordinary eyes and one of the most powerful hunting strikes in the animal world. Some species smash hard-shelled prey, while others use sharp, spear-like limbs to catch fish.

“Mantis shrimp” refers to hundreds of species, so there is no single conservation status for them all. Some face pressure from fishing and the loss of the reefs and seabed habitats they call home. Join us for one of our favorite classic episodes and discover why this remarkable creature deserves attention far beyond its famous punch.

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