Jelly blubber
![](/Images/godic/202501/21/Blue_Blubber_Jellyfish_IMGP21025830.JPG")
![Blubber Jellyfish at Monterey Bay Aquarium showing two of the color variations (blue and brown) possible in this species.](/Images/godic/202501/21/Blubber_Jellyfish_15830.jpg")
![Blubber jellyfish at the Monterey Bay Aquarium's](/Images/godic/202501/21/Blubber_Jellyfish5830.jpg")
The jelly blubber (Catostylus mosaicus), also known as the blue blubber jellyfish, is a species of jellyfish from coastal regions in the Indo-Pacific. It is the most commonly encountered jellyfish along the Australian eastern coast and large swarms sometimes appear in estuarine waters.