2006-12-17 07:12:06 · 7 answers · asked by bigdodgeramem00 1 in Pets ➔ Fish
Yes, but amazing as this sounds, sharks and other primitive forms of fish can never stop swimming in their entire lives, because they need movement to keep breathing. Since sharks need constant swimming to draw water into their gills, it appears that they sleep while swimming.
According to Wikipedia:
"It is unclear how sharks sleep. Some sharks can lie on the bottom while actively pumping water over their gills, but their eyes remain open and actively follow divers. The spiny dogfish's spinal cord, rather than its brain, coordinates swimming, so it is possible for a spiny dogfish to continue to swim while sleeping. It is also possible that a shark can sleep with only parts of its brain in a manner similar to dolphins."
2006-12-17 07:15:53 · answer #1 · answered by Somebody, somewhere 2 · 1⤊ 0⤋
Sharks do not sleep. If they did, that would mean they would stop moving, so their gills would stop taking in air, therefore causing the shark to die.
2006-12-17 15:21:39 · answer #2 · answered by Kenna 1 · 0⤊ 0⤋
They take naps, it only a few minutes an then they're rejuvenated again, they take in air so they can float while they sleep. Thats is why they take in the air b/c they cannot breath under water, sharks are nocturnal chrondocytes
2006-12-17 15:27:37 · answer #3 · answered by snowprincess20010 2 · 0⤊ 0⤋
aquarium sharks or saltwater sharks?
either way i think all fish sleep
2006-12-17 15:15:04 · answer #4 · answered by Skittles 4 · 0⤊ 0⤋
all fish sleep,, mostly your large fishes like sharks & whales mostly nap....
2 points here
2006-12-17 15:39:09 · answer #5 · answered by Angell 6 · 0⤊ 0⤋
Yes they do, but like other ocean animals, their eyes don't close. And they need to keep moving the whole time.
2006-12-17 15:20:43 · answer #6 · answered by whatevbookwrm687 4 · 0⤊ 0⤋
don't think so
2006-12-17 15:19:34 · answer #7 · answered by zenon_bluezam 2 · 0⤊ 0⤋