How do jellyfish rest? Do jellyfish sleep? How do they sleep?

Strictly speaking, jellyfish do not sleep.

Jellyfish is a kind of lower invertebrate zooplankton and carnivore. Only creatures with complex nervous system have the concept of sleep. Jellyfish have no concept of sleeping. Jellyfish should sleep like fish, and people who have raised fish all their lives may not know exactly how fish sleep.

Many animals don't sleep in the traditional sense. Their sleep should be called rest!

Just like a horse is standing when sleeping, it is different from our traditional concept of sleeping.

So jellyfish just float in the water to sleep!

The difference is that their metabolism is much slower at this time.