Jellyfish, or Sea Jellies are made up mostly of water. There are over 200 species within just the class of scyphozoans, the most popular being the saucer shaped Moon Jelly, Aurelia aurita, and all are marine free-swimming medusa.

A jellyfish's body is made up of two layers, in between is a jellylike substance. Jellyfish posses  no distinct head, digestive or structural organs, and all possess Cnidae, which are specially modified stinging cells also called nematocyst. Douse stings with vinegar and apply ice for pain. IMMEDIATE medical attention may be required for severe reactions.

Jellyfish feed on small plankton animals that they capture within their tentacles. Freshly hatched and enriched brine shrimp, Artemia, has been the substitute for plankton.

The midwater, or mesopelagic zone, located between the ocean's photosynthetic surface and the sea's deep dark bethnic layer, only accounts for one quarter of the entire ocean and yet it contains the majority of the ocean's biomass.

The midwater region is where sunlight's reach is too weak for photosynthetic organisms.  The only  light found here is produced by bioluminescence from the living inhabitants.  Bioluminescence is a frequent characteristic of midwater animals.

 A plankton Kreisel and jellyfish tank are uniquely designed. Water flow is introduce in a method called laminar flow. This creates a gentle flow that keeps the jellyfish in suspension. This streamline flow also helps  to separate debris in a manner as to not draw the jellies into the filter system.

Midwater Systems has developed a custom acrylic jellyfish tank, called the Jelliquarium, and is working on holding systems used to keep these midwater collections and gelatinous organisms in suspension.

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Captive Raise Moon Jellyfish

Cnidarians

Jellyfish Basics

Portuguese Man-Of-War

Box Jellyfish

Jellyfish in Home Aquariums ?
 
 

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 Safety and Remedies

Niether Jelly nor Fish

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