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My oz_magi story

I have a question, maybe somebody can answer it: do sharks sleep? I mean, there won’t be any shark at Oz (duh!) but I want to use the idea. Discovery Channel has its Shark Week every year down here and I’d watched it before but I don’t remember if they had talked about this subject. If somebody knows the answer, or knows where I can look for it, it’ll help me a lot!
(btw pureblood_icons once made nice sharks icons, you can find it here and here)

Comments

( 4 comments — Leave a comment )
visionofblue
Nov. 6th, 2005 04:47 am (UTC)
I vaguely remember looking this up for Shifting Alliances ( because of the whole shark/cat thing). I don't remember ever finding a definitive answer. Damn, I wish I could remember. I'm...ever so unhelpful, sorry.
adrianabr
Nov. 6th, 2005 05:13 am (UTC)
Not unhelpful, really - I thought it was a stupid question, but now I know somebody else had thought about it too, *g*
callmeri
Nov. 6th, 2005 01:48 pm (UTC)
This is from the UK's National Marine Aquarium website:

Do sharks sleep?
It depends what you mean by sleep. When humans sleep we are not conscious of what is going on around us, we kind of shut-down for a while and are not able to walk around unless we happen to be sleep-walking. Sharks rest in a different way. They can rest part of their brain while still swimming along, semi-aware of what's around them. Sharks that are able to stop swimming will settle on the seabed, and species like the British Bullhuss shark actually close their eyes - so they appear to sleep like we do. In our aquarium I have seen two Sandtiger sharks bump into each other nose-to-nose. They were so startled, they both took off at great speed in opposite directions. This suggested to me that they were dozing on the move and not paying full attention to where they were going, but I have never seen them bump into the sides of the tank when snoozing, so they normally seem to have an idea of where they are. A lot of research has been done on sleep in humans, and many mysteries still surround sleep and its importance to healthy living, but conducting similar research on sharks is almost impossible for practical reasons, we have a lot to learn about sleep and its purpose in fish and other animals.

adrianabr
Nov. 6th, 2005 05:31 pm (UTC)
Wow, that's info!!! Thanks a lot for that, now I know what I'm going to write!
( 4 comments — Leave a comment )