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Jelly Fish – 550 Million years old
The umbrella like headed jellyfish can be found in every oceans in the world. Jellyfishes are the oldest multi-organ animals in the world. The evolved in world oceans 550 million years ago. They have no brain and nervous system. Jellyfishes are found in different shapes and color. The 90 percentage of their body contain water. They are also known for eating other jellies. Box jellyfish of the family is the most venomous species on Earth. Their tentacles have more than 5000 stinging cells.
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