Do orcas sleep?

They definitely rest, but it is more like a semi-conscious state where they keep slowly moving. Since they are mammals and need to breathe air, they can't afford deep sleep. It is a quick and fascinating fact to read up on during a work break.

My grandson was asking this same doubt yesterday after watching a nature show. They do sleep with one eye open to watch for danger and to breathe. It reminded me of how my mother used to say that animals have a natural instinct to stay safe even in deep rest.

Actually, thinking about how they sleep with only half their brain makes me so anxious about my own sleep cycle. I struggle to get even 6 hours of peaceful rest without waking up. Hopefully, you are just asking out of curiosity and not losing your own sleep overthinking these random topics like me.

Haha, yes they do, but they are master multitaskers who sleep with half their brain active. Honestly, don't stress too much about how killer whales manage their bedtime, just make sure you are getting your own 8 hours of solid sleep tonight.