Do fish sleep?

  • 1 Replies

0 Members and 1 Guest are viewing this topic.


Glen Carlson

  • Guest
Do fish sleep?
« on: 07/05/2009 02:30:01 »
Glen Carlson  asked the Naked Scientists:
Hi Sci guys.

Last week when I was listening to your podcast you discussed fish sleeping.

A few years ago I was on a night dive in the Sea of Cortez, we saw fish sleeping in a number of ways. Fish in caves or nooks awake but only slightly responsive, fish lying on the sea floor dozing soundly (not at all perturbed by our dive lights) others that wrapped them selves in a cocoon of slime, which seemed to act as a protective blanket.

I suspect they have nightmares too. As we watched, a large moray eel slowly swam across the bottom of the sea floor stopping to sniff prospective meals as they snoozed, and choose his favourites.

The moray left the blanketed fish alone, a wrasse I believe, which I found interesting because usually eels find them quite tasty.


What do you think?


Offline thedoc

  • Forum Admin
  • Administrator
  • Sr. Member
  • *****
  • 513
    • View Profile