Depends on the jellyfish
As in most groups of animals, there is huge variation in size of jellyfish. The largest jelles are over 7 feet in diameter and can be over 120 feet long, and weigh hundreds of pounds. Whereas other types of jellies are miniscule; barely larger than a babies fingernail, and weighing a few milligrams. And of course there are jellies of all sizes in between these.
jelly fish can get bigger than a full grown human
Jellyfish range in size from being extremely small to being very large so their size and the size of their tentacles has an impact on what they are able to consume. Generally speaking, a jellyfish will eat whatever it can catch and keep in its tentacles.
the average size of a jellyfish is about the size of a human's foot
Jellyfish can range from the size of your hand to the size of a bed... it depends
they shrink in size
Jellyfish can reproduce sexually and asexually. There are around 100 spawn per litter when jellyfish reproduce, and the youngest spawn are known as larval planulae.
The main predator of jellyfish are other jellyfish (usually larger). Also, sharks and other predators eat jellyfish in the open ocean.
no it dont just dont touch it
It is about the size of your pinkie finger nail.
Sun jellies can have a diameter up to eight feet, though many range smaller. I have seen very large ones before when there was a boom in jellyfish populations in the Puget Sound area when I was visiting there a few years ago. I did not go swimming that year. ;)
Jellyfish species vary in size, some reaching two metres across the bell and trailing tentacles 30metres behind them.
Jellyfish come in many different sizes. Many are small and can fit in the palm of your hand. Others are much larger than humans.
Yes, the use their tentacles to paralyze prey and eat it alive.