Fun facts about jellyfish!


Jelly Fish Aquarium


What is a jellyfish?

The word jellyfish is a common term used to describe animals that are gelatinous or made up of ‘jelly-like’ material. There are many different types of jellyfish, including stinging kinds called medusae and non-stinging kinds called comb jellies or ctenophores. Another type of jelly animal called a salp is even in the same group as humans!

How do jellyfish blooms form?

Jellyfish are plankton and are not strong swimmers, so they are at the mercy of the ocean currents. Blooms often form where two currents meet and if there is an onshore breeze thousands of jellyfish can be beached.

How long do jellyfish live?

Most jellyfish live less than one year, and some of the smallest may live only a few days. Each species has a natural life cycle in which the jellyfish form is only part of the life cycle. The most familiar stage is the medusa stage, where the jelly usually swims around and has tentacles hanging down. Male and female medusae reproduce and form thousands of very small larvae called planulae. 

Are there good things about jellyfish?

Yes, jellyfish are very important animals in the ocean. We should definitely respect and not harm them. They are food for a number of marine animals such as large fish and turtles. Even humans eat jellyfish – yummy! Jellyfish also provide a habitat for many juvenile fishes in areas where there are not many places to hide. They can also protect the small fish from being eaten by predators with their stinging cells. Also, many young crabs hitchhike on the top of jellyfish so they don’t have to swim.

Did you know

some jellyfish are bigger than a human and others are as small as a pinhead? ... Do people in some countries eat jellyfish? ... that jellyfish have been on Earth for millions of years, even before dinosaurs? ... jellyfish have no brain but some kinds have eyes? ... that jellyfish are mainly made up of water and protein? ... a group of jellyfish is called a smack?


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