Why do jellyfish hurt you?

Answer 1

Usually the jellyfish stings a person when they accidentally get too close to it. The jellyfish sees them as a threat and tries to defend itself. They got no brain, so they can't even think what they are doing.
Their sting is to protect themselves, and to stun food so they can eat it.

They have no brain, so don't know a human from a goldfish. Humans just accidentally set off the jellyfishes' instinct to sting.
Jellyfish will sting you if they feel threatened.

Answer 2

Jelly fish are beautiful plankton that float through the ocean currents, catching food with their tentacles. Their tentacles are full of venom, so when they come in contact with something, venom is put into what they touch. This is why it hurts when there is a brush against a jellyfish.

Answer 3

Jelly fish never mean to harm humans, when ever it makes contact with something it automatically send out harpoons that inject the venom... they sting to kill the prey (fish) jelly fish float in the water and most cannot fight the current so when ever it runs into a fish, or human, its stingers automatically inject the venom.

Answer 4

Jellyfish tentacles are covered with stinging cells called nematocysts. When the nematocysts are triggered, usually by touching another organism, barbed harpoon-like stingers are shot out and toxins are released. These cells are still active long after the jellyfish is dead, so touching a beached jellyfish without gloves is not recommended.

Answer 5

It is both for defense and for hunting prey. They inject a neurotoxic venom using these sort of harpoon-like barbs. This paralyses the prey so they can begin to feast. There is not enough venom to disable most humans, but it will hurt pretty bad.

Answer 6

To paralyze their prey and defend themselves from predators.

Answer 7

Jellyfish stings hurt because they have toxins in their tentacles so when they touch you with those tentacles the toxins enter your skin and it hurts.

Answer 8

Because you touched it.

Answer 9

yes