Hello! Let's talk about jellyfish. Jellyfish look very pretty because they are often colorful and float gently in the water. But did you know that some jellyfish can sting? This is because they have tiny little needles on their tentacles called 'nematocysts.' These needles can give a sting that might feel like a bee sting or sometimes worse. When jellyfish sting, they release a kind of poison called venom to protect themselves from animals that might want to eat them.
Not all jellyfish are very dangerous, but some types can be quite venomous and make people feel sick or hurt. So, it's important to be careful when you see jellyfish in the water and avoid touching them, even if they look beautiful.
Remember, jellyfish use their venom for protection, not to hurt people on purpose. They're just trying to stay safe in their home—the ocean!