JELLYFISHJellyfish are not really fish. They are invertebrate animals. This means that unifisho
have no backbones. In fact, they have no bones at all
Jellyfish have stomachs and mouths, but no heads. They have nervous systems for Sensing the
around them, but no brains. They are made almost entirely of water, which is why you and
through them.
Some jellyfish can glow in darkness by making their own light. The light is made by a chem
reaction inside the jellyfish. Scientists believe jellyfish glow for several reasons. For example,
may glow to scare away predators or to attract animals they like to eat.
Most jellyfish live in salt water, apart from a few types that live in fresh water. Jellyfisareid
oceans and seas all over the world. They live in warm, tropical seas and in icy waters near the
and South poles
Which one creates jellyfish's light?
White blood
Chemical reaction​