Help make Alexa smarter on Alexa Answers. Sign in with Amazon

Animals

Are there any animals that sleep with their eyes open?


The most famous examples of animals that genuinely sleep with their eyes open are definitely snakes and fishes (including sharks), for the simple reason that these creatures don't have eyelids, and so they stay (almost) entirely still, without expanding energy, and with their eyes fully opened

{{ relativeTimeResolver(1589227288155) }}

LIVE
Points points 28
Rating

Similar Questions
Sign in to view all similar questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE