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The jelly blubber is distinguishable by its color, which ranges from light blue to a dark blue or purple, and its large (250-300mm [2]), rounded bell which pulses in a staccato rhythm. [1] It occurs along the coastline of Eastern Australia in estuaries and shallow bays, and often blooms to high abundance.
Catostylus mosaicus (Blue Blubber Jelly) These jellyfish have 3 layers that make up their bodies. They have an inner gastrodermis that comprises the digestive cavity. The gastrodermis possesses a single opening that functions as a mouth and an anus.
Blue_Blubber_Jellyfish_IMGP2102.JPG (640 × 480 pixels, file size: 122 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
These jellyfish drift closer to the shore to catch the large abundance of plankton with their tentacles. This jellyfish has many stinging tentacles. The four mouth arms are large with many wrinkles and ripples. [3] The jellyfish live off a diet of phytoplankton or zooplankton as well as the eggs and larvae of other aquatic animals such as fish. [4]
The deep blue, by-the-wind sailors that are recognized by many beach-goers are the polyp phase of the life cycle. Each "individual" with its sail is really a hydroid colony, with many polyps that feed on ocean plankton. These are connected by a canal system that enables the colony to share whatever food is ingested by individual polyps.
It has numerous microscopic venomous cnidocytes which deliver a painful sting powerful enough to kill fish, and even, in some cases, humans. Although it superficially resembles a jellyfish, the Portuguese man o' war is in fact a siphonophore. Like all siphonophores, it is a colonial organism, made up of many smaller units called zooids. [10]
Porpita porpita, or the blue button, is a marine organism consisting of a colony of hydroids [2] found in the warmer, tropical and sub-tropical waters of the Pacific, [3] Atlantic, and Indian oceans, as well as the Mediterranean Sea and eastern Arabian Sea. [4]
The blue trevally is a moderately large fish, growing to a recorded maximum length of 70 cm and a weight of 8 kg. [2] The species is similar in general morphology to a number of other trevallies in the genus Carangoides , having a compressed, oblong body, with the dorsal profile more convex than the ventral profile.