Jellyfish are not really fish. They are invertebrate animals. This means that unlike fish or people, they 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 world around them, but no brains. They are made almost entirely of water, which is why you can look through them. Some jellyfish can glow in darkness by making their own light. The light is made by a chemical reaction inside the jellyfish. Scientists believe jellyfish glow for several reasons. For example, they 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. Jellyfish are found in oceans and seas all over the world. They live in warm, tropical seas and in icy waters near the North and South poles. Which one creates jellyfish's light?

Jellyfish are not really fish. They are invertebrate animals. This means that unlike fish or people, they have no backbones. In fact, they have no bones at all. Jellyfish have stomachs and mouths, ...

Jellyfish are not really fish. They are invertebrate animals. This means that unlike fish or people, they have no backbones. In fact, they have no bones at all. Jellyfish have stomachs and mouths, ...

Koala (Phascolarctos cinereus) is one of the Australia’s unique animals that have pockets (marsupials) like a kangaroo. The name of Koala comes from the aboriginal language which means “not drinking”....

The Nature Reserve Home of the Monkey Ghost Tarsier is a unique animal with enormous eyes and a body about the size of a tennis ball. It’s the world’s smallest primate. You can only find them at Ta...

The question is based on the following text. Lala, Don’t forget to join us in the English Club meeting this evening. We’re going to discuss our plan to celebrate our school anniversary. Lintan...