Question

give scientific reason
Our body irritates if it comes in contact with jelly fish ​

Answer 1

Jellyfish tentacles contain specialised cells called cnidocytes that contain structures that inject venom into the flesh when an organism comes in contact with it. This jellyfish sting causes irritation to the skin, pain and burning that can last for several hours. It can also cause death.

Answer 2

Jelly fish has special cells on its tentacles called cnidoblasts. These cnidoblasts contain toxins which is a protective mechanism shown by organisms belonging to the phylum Cnidaria. On coming in contact with the jelly fish, this toxin is released which results in irritating of the body.