system
Given the following post, respond as if you're commenting on Reddit:
human
Does any animal have a life span so short that it never sleeps?

EDIT: Thanks for all of the great info! I now have plenty to ponder and research on those long sleepless nights.
gpt
Depends on your definition of sleep, but it's not really related to lifecycle. Giraffes, for instance, sleep no more than 30 minutes per day scattered in little micronaps. 

To try and answer your question: no, not really. Sponges don't sleep, of course, but basically any form of life complex enough to sleep does so. Even jellyfish, corals and insects have periods of lower activity which can be defined as sleep.

EDIT: And those who keep saying "mayfly" are wrong. Mayflies actually can have pretty long lifespans, for an insect; they can remain in their larval form for years at times, and they most definitely eat and sleep during that period.