fun with Jimmy and Sharky
#11
09-14-2007, 12:20 PM
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09-14-2007, 12:33 PM
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#14
09-14-2007, 12:38 PM
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RE: fun with Jimmy and Sharky
ORIGINAL: CutterW
Didn't know sharks could sleep on the floor. thought once they stopped they were screwed.
Didn't know sharks could sleep on the floor. thought once they stopped they were screwed.
http://128.227.186.212/fish/educatio...ns/Basics.html
Do sharks sleep?
It was once believed that all sharks had to swim constantly in order to breathe and could not sleep for more than a few minutes at a time. Oxygen-rich water flows through the gills during movement allowing the shark to breathe. While some species of sharks do need to swim constantly, this is not true for all sharks. Some sharks such as the nurse shark have spiracles that force water across their gills allowing for stationary rest. Sharks do not sleep like humans do, but instead have active and restful periods.
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09-14-2007, 12:55 PM
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09-14-2007, 01:35 PM
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09-14-2007, 07:38 PM
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09-14-2007, 07:43 PM
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#19
09-14-2007, 07:43 PM
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#20
09-14-2007, 11:24 PM
RE: fun with Jimmy and Sharky
ORIGINAL: bajafun
from
http://128.227.186.212/fish/educatio...ns/Basics.html
Do sharks sleep?
It was once believed that all sharks had to swim constantly in order to breathe and could not sleep for more than a few minutes at a time. Oxygen-rich water flows through the gills during movement allowing the shark to breathe. While some species of sharks do need to swim constantly, this is not true for all sharks. Some sharks such as the nurse shark have spiracles that force water across their gills allowing for stationary rest. Sharks do not sleep like humans do, but instead have active and restful periods.
ORIGINAL: CutterW
Didn't know sharks could sleep on the floor. thought once they stopped they were screwed.
Didn't know sharks could sleep on the floor. thought once they stopped they were screwed.
http://128.227.186.212/fish/educatio...ns/Basics.html
Do sharks sleep?
It was once believed that all sharks had to swim constantly in order to breathe and could not sleep for more than a few minutes at a time. Oxygen-rich water flows through the gills during movement allowing the shark to breathe. While some species of sharks do need to swim constantly, this is not true for all sharks. Some sharks such as the nurse shark have spiracles that force water across their gills allowing for stationary rest. Sharks do not sleep like humans do, but instead have active and restful periods.