Yes.
they don't
they do not reproduce
Get immediate medical care.
They don't.
It doesn't.
Jellyfish do not care for their young.Jellyfish don't feed their young, they fend for themselves.
You can buy a box jellyfish from sites such as The Marine Center. Before purchasing the fish, you need to make sure that you are going to be able to care for it properly.
They don't. Like most invertebrates young jellyfish fend for themselves. This is true of most animals that are not mammals or birds.
In nature, most animal mothers take care of their young. Jellyfish are not those type of mothers. When baby jellyfish hatch, they float out and live on their own.
If a jelly stings you, rub it with vinegar. DO NOT SCRATCH.
No. I do not believe that jellies do, but sometimes polypes work together.
Yes, as long as you take proper care of them :)