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Shark

en.wikipedia.org/wiki/Shark

Sharks are a group of fish characterized by a cartilaginous skeleton, five to seven gill slits on ..... Unlike bony fish, sharks do not have gas-filled swim bladders for buoyancy. ..... Species that...

How do white sharks sleep? - Marine Dynamics

www.sharkwatchsa.com/en/blog/category/482/post/1099/how-white-sharks-sleep/

Shark sleeping patterns have puzzled scientists for many years. All sharks extract oxygen from the water with their gills, and to do this water must move over and ...

How Do Sharks Swim While Asleep?

www.elasmo-research.org/education/topics/b_sleep.htm

In response to a question about whether or not sharks sleep and, if they do, how do they swim while unconscious, I wrote: Sleep is one of the last bastions of ...

How Do Sharks Sleep? Get The Fascinating Facts Here!

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

Jan 19, 2016 ... ... sharks sleep? Do they have to swim constantly to stay alive? ... Sharks do not experience sleep the same way humans do. Some can't sleep ...

www.ask.com/youtube?q=Do Sharks Sleep?&v=_fnjgF9K_YE
Mar 18, 2011 ... 2 White Tip Sharks hanging out in a cave while a cleaner wrasse does its job! Who knew sharks could just sit?

Do sharks sleep at night? | Reference.com

www.reference.com/pets-animals/sharks-sleep-night-4e9c1ce224928a15

Sharks rest in an approximation of what is termed sleep in land animals, though they do it with their eyes open. However, some sharks are nocturnal, which ...

Sharks - Sleep

www.sharksinfo.com/sleep.html

For this reason, it was supposed for a long time that sharks did not, in fact, sleep. However, sharks need to rest at some stage and different species accomplish ...

Shark Sleeping - Will a shark drown if it stops moving ... - Animals

animals.howstuffworks.com/fish/sharks/shark-drown2.htm

See if shark sleeping is a myth or a reality. ... In a study of lemon sharks, which switch between breathing methods, juveniles ... Do feral cats spread disease?

How do sharks sleep? | Reference.com

www.reference.com/pets-animals/sharks-sleep-529c99a16764d742

Sharks do not sleep in the same manner most other animals do, instead having split periods of rest and activity, according to the Florida Museum of Natural ...

Do Sharks Sleep? « Dutch Shark Society

www.dutchsharksociety.org/do-sharks-sleep-2/

Jan 9, 2014 ... Humans love to crash on the coach every day, but sharks don't. Some sharks, like the pelagic species, just have to keep swimming. For them ...

Answer
Sharks do not sleep like humans do, however they do appear to have restful periods.
More Info

Do Sharks Sleep? - Marine Life - About.com

marinelife.about.com

Nov 30, 2015 ... Despite all the research on sharks over the years, shark sleep is still somewhat of a mystery. Learn the latest thoughts on whether sharks sleep.

How Do Sharks Sleep? Do They Dream? - Huffington Post

www.huffingtonpost.com

Jul 7, 2015 ... Sharks and their sleeping habits are still very much a mystery, mainly because of the challenge of monitoring sharks for a 24-hour period, ...

Do Sharks Sleep?

www.sharksider.com

Dec 30, 2014 ... How Do Sharks Sleep. Sharks are the terrors of the seas to some but the most graceful and amazing creatures to others. No matter what your ...