Certain animals can survive without needing sleep. Here is how these animals rest without sleeping:
Cockroaches are known as one of the most resilient insects that can survive in almost any environment. They do not need sleep like most other animals and remain alert, however, they do have periods of rest.
Dolphins have unihemispheric sleep, allowing them to sleep with one eye open and half of their brain resting while the other half remains awake. This helps them regulate their conscious breathing.
Jellyfish are simple marine creatures that do not have a brain, heart, or bones. They do not require sleep although they do take rest by slowing down their activity.
Bullfrogs do not need to sleep and stay alert to respond to any potential threat around them. They may rest their eyes, however, their brains remain alert at all times.
Ants are known as one of the most hard-working creatures. They do not sleep like humans or other animals but instead, take short breaks throughout the day to rest.
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