They do not have anything that could be called a brain.
It is not possible to have no brain. If you do not you will not live a life. If you did not have a brain your body would not know how to move, breathe and do neccesary things to live.
yes you can.. there is a 2 year old boy born without a brain ... still surviving. he only has a brain stem.. look it up on youtube.
Unfortunately, no.
The jellyfish live in jellyfish fields.
You can't. No brain, you will die.
No, it is impossible for a human to live without a brain.
no.
No
it is not possible to live without laws and rules
Jellyfish live in the water.
No
Tube worms which live near deep sea hydrothermal vents