Great white sharks in hot water, and more…
Quirks and Quarks

Great white sharks in hot water, and more…

B2Upper-intermediateJune 19, 202654 min

Some of the oceans biggest, most powerful predators, like certain sharks and tuna, are “mesothermic” or warm-bodied. Running hot allows them to rapidly convert their food to energy and heat, helping them swim faster and hunt in cold waters. But that advantage may become a disadvantage in a warming climate, meaning these fish need to find new ways of cooling off, or face a new threat to their survival. PLUS: Ancient Peruvians traded parrots across deserts and mountainsFrom the archive: David, Jay and Bob, and Quirks & Quarks' origin storySea cucumber 'zombie tissue' straddles the...

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All your favorite CBC podcasts are now available on YouTube. The best in award-winning true crime investigations, hilarious comedies, vibrant pop culture conversations, and even more audio series are all available on CBC Podcast's YouTube channel. You'll also find exclusive video first episodes, YouTube shorts, and behind-the-scenes content from our hosts and producers that

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you can't find anywhere else. So if YouTube is your go-to source for podcasts, just search CBC Podcast and hit subscribe and you'll never miss the latest update. This is a CBC Podcast. Hi, I'm Bob McDonald. Welcome to Quirks and Quarks. On this week's show, how some of the ocean's biggest

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and most powerful predators may be at risk of overheating in a warming world. As fish get big, and particularly these warm-bodied ones, it's actually increasingly hard for them to lose their heat from their body. And a surprising discovery by sea cucumber researchers that left them scratching their

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