The sleeping habits of some animals

[Catherine]

Cats live to sleep. I don't know how they can sleep so much.

I had no idea that animals could sleep while swimming or flying. Clearly the world of animals is more interesting that we ever imagined.  

All things need to sleep at least some of the time. At least I think all things need to sleep. I wonder if there is a species that never sleeps?

Here are seven animals that need very little sleep.

https://animalogic.ca/wild/up-all-night-...ever-sleep


I can't find anything yet that indicates that there is a species that never sleeps. 
Being someone who doesn't sleep much, I am curious about this.