It depends, poisonous: SERIOUS!!!
Nonpoisonous: O.K.
Jellyfish stings can range from very mild - to deadly - depending on the species. Their sting is designed to paralyse their food before it's drawn into the stomach cavity.
The most famous forms of deadly jellyfish species are the Portugese Man'o'War and the Box Jellyfish
One type of jellyfish is called a sea wasp. How powerful is its sting?
it depends on what type of jellyfish it is. Some can be life threatening.
Blue bottles
Pink
Quite powerful depending on the distance from a close range it may puncture the skin, but from a distance it is sure to sting.
Sting effects range from no effect to extreme pain to death.
enough to kill roughly 60 humans. if the sting is left untreated, one can die in the time span of 3 minutes.
The man o' war jellyfish has a powerful sting.
The lions mane jellyfishs' status has not been listed by the IUCN
Well, I'm guessing no. They just kinda float around, no need for senses.
Large types of jellyfish's can reach 8 feet diameter, with tentacles reaching 150 ft long.
They can do, but will only do so if really provoked.
their jaws are very powerful. so powerful that they lift things heavier than themselves! so, it makes sense an ant's bite would sting.
They will have a sting, but they are usually quite docile and will only sting if severely provoked. The sting has evolved from an egg-laying tube in these insects, so all females but NO males will have a sting.
The Portuguese Man'O'War eats any fish or other small animal that it can capture and subdue with its tentacles and powerful sting.