No. I do not believe that jellies do, but sometimes polypes work together.
they don't
It doesn't.
Irukanji live in the ocean around the Australian coast.
If you mean how potent the venom is altogether, it would be the Irukanji jellyfish of Australia. If you mean how dangerous the critter and its venom are to us, it would be Chironex Fleckeri, the Box Jellyfish, which also lives in Australia (in Queensland).
Jellyfish do not care for their young.Jellyfish don't feed their young, they fend for themselves.
They don't. Like most invertebrates young jellyfish fend for themselves. This is true of most animals that are not mammals or birds.
If you mean its venom potentially all together, its the Irukanji jellyfish, which lives in the waters of Queensland, Australia. If you mean how dangerous the venom is to us, it would be Chironex Fleckeri, aka the Box Jellyfish, which also lives in the waters of Queensland, Australia.
A young immobile jellyfish is called a polyp
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.
An immature jellyfish is called an "ephyra".
Yes.
ephyra