Do sponges sleep?

As noted by others, sponges lack nervous systems, but it's worse than that, sponges don't have nerve cells at all. So NO they don't 'sleep" in any manner similar to other animals. read more

No Sponges do not have a nerves system. An animal must have a large central nervous system to need sleep. Animals like fish sleep and those more evolved then fish like us sleep. read more

Sea sponges can't sleep because they have to breathe and if sea sponges sleep they can't consentrate on breathing. read more

Best Answer: No Sponges do not have a nerves system. An animal must have a large central nervous system to need sleep. Animals like fish sleep and those more evolved then fish like us sleep. read more

No Sponges do not have a nerves system. An animal must have a large central nervous system to need sleep. Animals like fish sleep and those more evolved then fish like us sleep. I believe when you sleep your consciousness leaves your body. I am not so sure a sea sponge has evolved to the point that it is self conscious. read more