Sleepy Sharks, Sharks Love Grass, Glow-In-The-Shark

Curiosity Weekly

Warner Bros. Discovery

Science

4.6 • 963 Ratings

🗓️ 27 July 2022

⏱️ 12 minutes

🔗️ Recording | iTunes | RSS

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Summary

Today, you’ll learn about how some sharks do in fact sleep, how sharks are fighting climate change, and how some sharks glow in the dark!

Shark nap time.

“Sharks Sleep, Even When Both Eyes Are Wide Open” by Veronique Greenwood
- https://www.nytimes.com/2022/03/09/science/sharks-sleep.html
“Behavioural Sleep in Two Species of Buccal Pumping Sharks” by Michael Kelly, et al.
- https://onlinelibrary.wiley.com/doi/10.1111/jsr.13139
“Analysis of Draughtsboard Sharks’ Metabolic Rates Suggests They Sleep” by Bob Yirka
- https://phys.org/news/2022-03-analysis-draughtsboard-sharks-metabolic.html
“Catshark” by Wikipedia
- https://en.wikipedia.org/wiki/Catshark
“Snake” by The San Diego Zoo
- https://animals.sandiegozoo.org/animals/snake
“Meet the Animals That Literally Sleep with One Eye Open” by Gian Gastone Mascetti
- https://www.scientificamerican.com/article/meet-the-animals-that-literally-sleep-with-one-eye-open/

Sharks are good for the earth.

“California Is About to Test Its First Solar Canals” by Roger Bales
- https://www.smithsonianmag.com/innovation/california-is-about-to-test-its-first-solar-canals-180979637/
“Project Nexus: Water & Energy Integration for the Future” by TID Water and Power
- https://www.tid.org/about-tid/current-projects/project-nexus/
“Energy and Water Co-Benefits from Covering Canals with Solar Panels” by Brandi McKuin, et al.
- https://doi.org/10.1038/s41893-021-00693-8
“NOAA Drought Task Force Report on the 2020–2021 Southwestern U.S. Drought” by NOAA Drought Task Force IV
- https://www.drought.gov/documents/noaa-drought-task-force-report-2020-2021-southwestern-us-drought
“New NOAA Report: Exceptional Southwest Drought Exacerbated” by Human-Caused Warming by NOAA/NIDIS
- https://www.drought.gov/news/new-noaa-report-exceptional-southwest-drought-exacerbated-human-caused-warming
“California Approves New Water Restrictions Amid Worsening Drought” by Soumya Karlamangla
- https://www.nytimes.com/2022/05/25/us/california-drought-water-restrictions.html
“California State Water Project” by Wikipedia
- https://en.wikipedia.org/wiki/California_State_Water_Project
“California Agricultural Production Statistics” by California Department of Food and Agriculture
- https://www.cdfa.ca.gov/statistics/

A different kind of night light.

"This deep-sea shark is one of the world’s largest glowing animals" by Annie Roth
- https://www.nationalgeographic.com/animals/article/deep-sea-shark-largest-glowing-animal-bioluminescence
“Quantification of bioluminescence from the surface to the deep sea demonstrates its predominance as an ecological trait” by Séverine Martini & Steven H. D. Haddock
- https://www.nature.com/articles/srep45750

For more about sharks, head to SharkWeek.com and don't miss #SharkWeek starting 7/24 on Discovery and streaming on discovery+.

Find episode transcripts here: https://curiosity-daily-4e53644e.simplecast.com/episodes/sleepy-sharks-sharks-love-grass-glow-in-the-shark

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Transcript

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0:00.0	Hi, you're about to get smarter in just a few minutes with Curiosity Daily from Discovery.
0:09.0	Time flies when you're learning super cool stuff. I'm Nate.
0:12.0	And I'm Callie. If you're dropping in for the first time
0:14.3	welcome to curiosity where we aim to blow your mind by helping you to grow your mind.
0:18.4	If you're a loyal listener welcome back. Today you'll learn about how some sharks do in fact sleep,
0:24.4	how sharks are fighting climate change,
0:26.7	and how some sharks glow in the dark.
0:29.7	Without further ado, let's satisfy some curiosity.
0:33.6	Do you know what time it is?
0:34.8	Uh, game time?
0:36.6	Nope.
0:37.4	It is my absolute favorite time of year.
0:39.5	Independence Day?
0:40.7	Shark Week.
0:42.0	Is that why you've been having trouble sleeping? That's mostly my run of the
0:45.3	mill insomnia, but yes, that is some of it. I am so freaking excited. You are just like
0:50.4	the sharks then. You don't sleep, you just rest. You know, it's funny you say that because there's actually been a new study that
0:56.7	suggests sharks do in fact sleep during some of their rest periods. But I thought they had to
1:01.5	keep moving to stay alive.
1:03.0	Okay, not to burst anybody's bubble, but that's really only a small handful of shark species
1:08.0	who need the continuous movement to pump water over the gills for breathing.
1:12.0	Wheel sharks, hammerheads, the glorious great whites,
	...

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