- They range in size from about 1 inch (2 1/2 centimeters) to 200 feet
(61 meters) long
- Jellyfish are not fish at all. They are invertebrates, relatives of
corals and sea anemones (uh-NEH-muh-neez).
- A jelly has no head, brain, heart, eyes, nor ears. It has no bones,
- To capture prey for food, jellies have a net of tentacles that contain
poisonous, stinging cells.
- All jellies sting, but not all jellies have poison that hurts humans
- Of the 2,000 species of jellyfish, only about 70 seriously harm or
occasionally kill people.
- Jellyfish has been around for more than 650 million years which means
that they outdate the dinosaurs and the sharks.
- Different species of jellyfish can be found in all the worlds' ocean.
- Jellyfish can even be found in freshwater.
- A species of jellyfish, the Box jellyfish (sea wasp) kills more people
than any other marine creature.
- The worlds largest known jellyfish can reach a diameter of 2.5 m/
8ft and their tentacles can grow to be half the length of a football
- Jellyfishes use jet propulsion to make their way through to oceans
of the world.
- Some jellyfish is avid swimmers while other mostly drifts with the
- Some species of jellyfish contains a lot of protein and is thought
to be able to play a large role in ending hunger and malnutrition in
poor areas around the world.
- Jellyfish is able to reproduce both sexually and asexually during
different parts of their life cycles.