Jellyfish, also known as muduasas are one of the oldest living things that still exist today, they have been around for roughly 600 - 700 million years old.
They are invertebrates, they hove no brain, heart, bones and are made up of 95% water.
There are six main parts of a jellyfish, the bell, muscle band, mouth, oral arm, tenticals, and gonads
A jellyfish's bell is the top part of their body, usually where their most distinctive feature is found. The color and pattern on their bells can be used to help identify what kind of jelly it is because every species has its own unique markings.
This picture shows a compass jellyfish, a type of nettle. Their bells look like a compass from the top
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