How Sharks Use Electricity To Sense Prey
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Sharks are some of the animal kingdom's most feared hunters, thanks to a special sixth sense.
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There are two ways that animals use electroreception. They either use their own electric currents and sense how those currents bounce back to interpret their surroundings. Or they pick up the electric currents already being produced by other animals to locate prey. Electroreception is most common in fish and some amphibians because salt water is a fantastic conductor of electricity - especially compared to air.
But, sharks are truly some of the best at using electroreception because theyre so sensitive. In addition to their strong muscles, aerodynamic shape, and specialized fins, this sixth sense helps sharks to be the talented hunters that they are famous for. Great white sharks are so sensitive, they can detect one millionth of a volt in a centimeter of seawater and maybe even less than that.
As a shark swims through the water, these electric fields travel into the pores under its head, through the tubes to the ampullae. Then tiny hairs read these signals and use a network of nerves to send a message to the brain. This gives the shark exact dimensions and location of the fish, helping catch and eat it.
#sharks #science #electroreception #seeker #tusktotails #anatomy
Read More:
How Sensitive Are Sharks to Electric Fields?
https://www.wired.com/2013/08/how-sensitive-are-sharks-to-electric-fields/
"IT TURNS OUT that sharks (and some other fish) can detect electric fields. This sixth sense is called electroreception."
The Shark's Electric Sense
http://faculty.bennington.edu/~sherman/the%20ocean%20project/shark's%20electric%20sense.pdf
"A menacing fin pierced the surface and sliced toward us. A great blue sharkthree meters in length homed in on the scent of blood like a torpedo."
Electroreceptors and Magnetoreceptors
https://www.hawaii.edu/fishlab/pubs/Tricas%20and%20Carlson%202012.pdf
"Many animals have the ability to detect electric and
magnetic fields."
____________________
Tusks, trunks, claws, tails. Animals have evolved in ways to adapt to their environment by developing some truly unusual physical traits. Why did elephants develop a trunk, and how does it even work? What are insect wings made of? How are tails used throughout the animal kingdom? Our host Dr. Evan Antin explores the strange world of animal physiology.
Seeker empowers the curious to understand the science shaping our world. We tell award-winning stories about the natural forces and groundbreaking innovations that impact our lives, our planet, and our universe.
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Subscribe to Seeker! http://bit.ly/subscribeseeker
Visit our shop at http://shop.seeker.com
There are two ways that animals use electroreception. They either use their own electric currents and sense how those currents bounce back to interpret their surroundings. Or they pick up the electric currents already being produced by other animals to locate prey. Electroreception is most common in fish and some amphibians because salt water is a fantastic conductor of electricity - especially compared to air.
But, sharks are truly some of the best at using electroreception because theyre so sensitive. In addition to their strong muscles, aerodynamic shape, and specialized fins, this sixth sense helps sharks to be the talented hunters that they are famous for. Great white sharks are so sensitive, they can detect one millionth of a volt in a centimeter of seawater and maybe even less than that.
As a shark swims through the water, these electric fields travel into the pores under its head, through the tubes to the ampullae. Then tiny hairs read these signals and use a network of nerves to send a message to the brain. This gives the shark exact dimensions and location of the fish, helping catch and eat it.
#sharks #science #electroreception #seeker #tusktotails #anatomy
Read More:
How Sensitive Are Sharks to Electric Fields?
https://www.wired.com/2013/08/how-sensitive-are-sharks-to-electric-fields/
"IT TURNS OUT that sharks (and some other fish) can detect electric fields. This sixth sense is called electroreception."
The Shark's Electric Sense
http://faculty.bennington.edu/~sherman/the%20ocean%20project/shark's%20electric%20sense.pdf
"A menacing fin pierced the surface and sliced toward us. A great blue sharkthree meters in length homed in on the scent of blood like a torpedo."
Electroreceptors and Magnetoreceptors
https://www.hawaii.edu/fishlab/pubs/Tricas%20and%20Carlson%202012.pdf
"Many animals have the ability to detect electric and
magnetic fields."
____________________
Tusks, trunks, claws, tails. Animals have evolved in ways to adapt to their environment by developing some truly unusual physical traits. Why did elephants develop a trunk, and how does it even work? What are insect wings made of? How are tails used throughout the animal kingdom? Our host Dr. Evan Antin explores the strange world of animal physiology.
Seeker empowers the curious to understand the science shaping our world. We tell award-winning stories about the natural forces and groundbreaking innovations that impact our lives, our planet, and our universe.
Visit the Seeker website https://www.seeker.com/videos
Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel
Seeker on Twitter http://twitter.com/seeker
Seeker on Facebook https://www.facebook.com/SeekerMedia/
Seeker http://www.seeker.com/
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