[4] C. mosaicus conservitus occupies the Bass Strait and can be distinguished by conspicuous papillae, blue or white color, and smaller bell.

[5] The bell of the jelly blubber is spherical in shape, and its feeding structures make up a greater proportion of its body than in many other species of jellyfish.

[5] Because of their unique body shape, C. mosaicus are known to utilize jet propulsion, triggered by the contracting and relaxing patterns of their bell.

[8] C. mosaicus additionally influences the estuaries in which they reside through recycling of inorganic nutrients, providing nutrition for primary producers.

[10] These blooms can negatively impact zooplankton which are consumed at higher rates or forced to expend more energy to avoid capture, leading to limitations in feeding and survival.

C. mosaicus populations are controlled by predation by sea turtles as well as jellyfish-eating fish, including tuna, butterfish, sunfish, and spiny dogfish [11] The life cycle of Castolysis moscaicus is similar to that of other members of the order Rhizostomae.

[12] The polyp reproduces asexually through strobilation which produces an Ephyra, a juvenile stage that matures into the medusa[12] Catostylus mosaicus are known to have a symbiotic relationship with photosynthetic algae.

Large blooms of jellyfish in coastal areas can interrupt recreation and their arms may produce a mild but irritating sting.

[16] Due to their size and high abundance, C. mosaicus is harvested for human consumption, and is considered a delicacy in some countries, including China and Japan.