A wide variety of jellies can be found throughout the Pacific Northwest and it’s amazing that these soft bodied animals have remained virtually unchanged for millions of years.  The oldest known fossils of jellyfish have been discovered in Utah and are more than 500 million years old.

A jelly doesn’t have a brain but reacts to changes in the environment by using a nerve net.  These nerve nets consist of interconnected neurons which are spaced far apart allowing the jelly to react when coming into contact with an object, or when sensing nearby food.

Another interesting feature about jellies is they do not have a respiratory system as their tissues are extremely thin and the cells are oxygenated by diffusion with the surrounding ocean.