How long jellyfish living on earth?

Answer 1

Jellyfish have been around for 500 million years.
Jellyfish have roamed the seas for at least 500 million years.

Answer 2

They have been around for a very long time, maybe millions. They may be one of the first creatures to be living in the oceans.

Answer 3

Jellyfish may be the oldest multi-organ animal life form in existence. It's estimated that they evolved 500 to 700 million years ago.

Answer 4

Almost about 650 million years!! that is longer than dinosaurs have been around!!

Answer 5

Jellyfish have roamed the seas for at least 500 million years.