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www.sharksider.com/how-do-sharks-sleep

How do sharks sleep? Well, they don’t sleep, exactly. Sharks do not experience sleep the same way humans do. Some can’t sleep at all, and the ones that do never close their eyes. Some shark species do, however, cycle through alternating periods of alert wakefulness and profound rest that is similar to sleep. We are pretty certain that ...

www.thoughtco.com/do-sharks-sleep-2291555

According to the Merriam-Webster online dictionary, sleep is "the natural periodic suspension of consciousness during which the powers of the body are restored." We're not sure sharks are able to suspend their consciousness, although it may be possible. Do sharks curl up and rest for several hours at a time, like humans generally do?

www.youtube.com/watch?v=iGcCyqQsnOE

Port Lucaya, Bahamas. Our dive-master put a Caribbean Reef Shark to sleep by rubbing its nose and then he picked it up and allowed us all to pet the shark! How awesome is that! ;-) For licensing ...

www.sharksider.com/do-sharks-sleep

This can be viewed as a rest-state or a period of sleep depending on your point of view. To others this is not a clear cut sign that sharks sleep or not. Picking a Side in the Argument. With our current understanding of sharks and a concrete definition of sleep, it is more than difficult to state if sharks do or do not sleep.

www.youtube.com/watch?v=dwE9tjed1SM

Do great white sharks sleep at all Watch more videos for more knowledge Do Sharks Sleep? - YouTube https://www.youtube.com/watch/01mLPG-y0SU Great White Naps...

www.thesuperfins.com/do-sharks-sleep

The Worst Case of Sleep Apnea Ever. As a group, sharks need water to pass over their gills in order to breathe. Most sharks cannot actively pump water over their gills like bony fishes can, and thus have to keep moving in order to breathe. So if a shark stopped to take a nap, it would stop breathing.

answers.yahoo.com/question/index?qid=20070218141015AA7wK95

I read a book about sharks..And it,it said that sharks doesn't sleep..Why??And is this true??

www.quora.com/How-does-a-shark-sleep-or-rest

A shark doesn't sleep or rest the way we do. That is stationary. They need to kee moving in order to keep water flowing over their gills to breathe. There are some sharks have spiracles, a small opening behind their eyes, that force water across t...

www.thedodo.com/do-sharks-sleep-swim-2226511159.html

The sleeping habits of sharks have always been a bit of a mystery. In order for most types of sharks to breathe, they have to be swimming, which means laying down to rest isn't possible for them. In order to sleep or take any type of rest, they would need to still be swimming while they do it. So ...

www.floridamuseum.ufl.edu/discover-fish/sharks/faq

Sharks have lots of teeth arranged in layers so if any break off, new sharp teeth can immediately take their place. Sharks can shed thousands of teeth during their life, this is why sharks teeth can be found washed onto beaches. Shark teeth also fossilize easily while the rest of the shark decomposes.