Pacific Sea Nettles

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Pacific Sea Nettles

Pacific Sea Nettles Chrysaora fuscescens
 
Natural History
Worldwide, there are more than 200 species of jellies.  Jellies are made up of 95% water and have no heart, brains, bones or other organs.  Their bodies let off pulsations, but movement is primarily controlled by bay and ocean currents.  Jelly species are being directly affected by climate change, as their populations and range continue to increase as water temperatures rise.  Information on this increase in jelly populations, referred to as jelly blooms, is shared with guests at Aquarium of the Bay.
 
Pacific Sea Nettles, Chrysaora fuscescens, are most commonly found along the California and Oregon coasts, and range into the Gulf of Alaska and Mexico.  The animals are medusivores, meaning they dine on other jelly species.  Brown Sea Nettles are equipped with nematocysts or stinging cells, which are located within their tentacles.  The animal has no control over what it stings, and does so instantly when touched.
 
 
Fast Facts
 

  • Worldwide, there are more than 200 species of jellies. 

  • Jellies are made up of 95% water and have no heart, brains, bones or other organs.

  • Movement is primarily controlled by bay and ocean currents, even though they do “pulsate”.

 
Conservation
Jelly species are being directly affected by climate change, as their populations and range continue to increase as water temperatures rise. They are one of the few species that is benefitting from this worldwide disruption of temperature patterns.
 
Bonus Tips

  • Aquarium of the Bay has cultured Moon jellies in-house since 1998.  For an up-close look at the life cycle of a Moon jelly, register for a Behind the Scenes tour.

  • Enjoy a sneak peek, moment of Jelly Zen