<P> Jellyfish are found in every ocean , from the surface to the deep sea . Scyphozoans are exclusively marine , but some hydrozoans live in freshwater . Large , often colorful , jellyfish are common in coastal zones worldwide . Jellyfish have roamed the seas for at least 500 million years , and possibly 700 million years or more , making them the oldest multi-organ animal . </P>
<P> Jellyfish are found in every ocean , from the surface to the deep sea . Scyphozoans are exclusively marine , but some hydrozoans live in freshwater . Large , often colorful , jellyfish are common in coastal zones worldwide . Jellyfish have roamed the seas for at least 500 million years , and possibly 700 million years or more , making them the oldest multi-organ animal . </P>
what kind of water do jellyfish live in
what kind of water do jellyfish live in
every ocean
every ocean