Do sharks sleep?
Sharks do not sleep like humans do, but instead have active and restful periods. They sleep in short spurts.
Answered
by Cara M.
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Older Answers
Fish can rest which saves energy, but they cannot sleep since they need a flow of water in order to breathe. ChaCha!
Answered by Josh B. -
There have been reports from all over the globe of sharks resting motionless in caves. They going into a sleep-like state. -ChaCha
Answered by Heather N. -
Some species of sharks do need to swim constantly. Sharks do not sleep like humans do. They have active and restful periods.
Answered -
Sharks do not sleep like humans, but instead have active and restful periods, maintaining some level of consciousness all the time.
Answered by Lisa K. -
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What is the function of the gill slits on a shark?
Gill slits on sharks and rays help "funnel" water into the sh...
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The shark's long, spiky teeth can chop up an octopus or squid...
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Sharks are fish that have been around since long before the d...
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Tigers sharks eat fish, seabirds, sea turtles, marine mammals...
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Can sand sharks attack humans?
Sand sharks do not normally attack humans unless they are pro...
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What is the function of the gill slits on a shark?
Gill slits on sharks and rays help "funnel" water into the sh...
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The shark's long, spiky teeth can chop up an octopus or squid...
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How do sharks differ from other fish?
Most other fish have skeletons made of bone. A shark's skelet...
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The great white shark, Carcharodon carcharias, also known as ...
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Sharks are fish that have been around since long before the d...
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Are there sharks in Lake Erie?
Sharks don't naturally inhabit Lake Erie, however one was cau...
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What is the function of the gill slits on a shark?
Gill slits on sharks and rays help "funnel" water into the sh...
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How many people were attacked by sharks in rehoboth beach, DE?
There have been only 3 shark attacks in the state of Delaware...
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Many sharks, if turned belly side up go into a temporary, tra...
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What do sharks and whales have in common?
Both toothed whales and sharks are vertebrates, and live in t...
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Sharks are fish that have been around since long before the d...
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No, sharks and all other fishes belonging to the class Chondr...
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Are there any sharks in Lake Springfield?
No, there are no sharks in Lake Springfield, Illinois but you...
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Bull sharks are one of only two species of shark that can sur...
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What energy efficiencies make sharks and rays a successful species?
Sharks are absolute masters of the low-energy lifestyle. They...
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Sharks are fish that have been around since long before the d...
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No, sharks and all other fishes belonging to the class Chondr...
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Sharks don't have tongues like us; shark and fish "tongues" a...
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Sharks can survive in captivity but many find it cruel. Join ...
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Sharks do not sleep like humans do, but instead have active a...
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Do whale sharks give birth to live young?
Yes, whale sharks are alive when birthed. The whale shark liv...
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Bull sharks are one of only two species of shark that can sur...
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Sharks are attracted to blood and irregular vibrations of som...
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Sharks can swim between 22 to 35 miles per hour. The Mako Sha...
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No, just like with any animal, including humans, if they eat ...
About Sharks
Sharks have fascinated and terrified man for thousands of years. Although 'shark attack' is one of the ways media companies get attention, only 10-15 people are killed by sharks each year, while humans kill over 100 million sharks annually. Many shark populations are threatened with extinction.
About Sleep
Sleep is necessary for mammals and many other animals, in order to rejuvenate their bodies. During sleep consciousness is lost or reduced and we are less responsive to external activities. Most people need at least 8 hours of sleep per day in order to function at their highest level. Not getting enough sleep can increase the risks of cancer, heart disease, obesity and diabetes.
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