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|Jelly blubber in Port Phillip Bay, Australia|
Quoy & Gaimard, 1824
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.
In Sydney waters, the Jelly Blubber's large bell is a creamy white or brown colour, but farther north in Australia it is usually blue. Contrary to popular belief, these jellies do not derive their color from symbiotic algae but rather produce the color themselves as a pigment. There is no obvious mouth on the underside, but there are small openings on each arm, through which food is passed to the stomach. The tentacles also have stinging cells that can capture tiny crustaceans and other plankton. It grows to a diameter of 35 centimetres (14 in).
The sting can be painful but generally poses no serious risk to humans.
Distribution and habitat
Eats mainly plankton, small fish, some crustaceans, and small particles in the ocean water.
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