Arkyrus Drifter

The bulwark rainbow jellyfish is umbrella-shaped, as most jellyfish are. It has a hollowstructure and contains a mass of trasparent matter called mesoglea (it is jelly-like, hence the name). It forms the hydrostatic skeleton of the jellyfish. The mesolgea is <95% water, but also has other fibrous proteins such as collagen and all sorts of debris and basteria that wandered into the amoebecytes as it drifted through the sea. Around the mesogloea is an epidermis, on the inside is the gastrodermis. The edge of the bell has rounded lobes it has been divded into called lappets. These lappets allow the bell to flex. In the gaps between the lappets, the rhopalia dangles; the rhopalia is the rudimentary sense organ. Inside the bell is the many tentacles of the jellyfish.   The underside of the bell, while it has the tentacles, also has a stalk-like structure called the manubrium that hangs down from its center. This has the mouth and also functions as the anus. There are four main oral arms that connect to the manubrium, streaming in the water below. When the mouth opens, it leads into the gastrovascular cavity of the jellyfish, where digestion occurs and it absorbs nutrients into its body. This area is divided by septas which make the central stomach and four gastrip pockets. Attached to the septa is four pairs of gonads and next to them are the septal funnels that supply oxygen to the gonads. Near the septa, there are filaments that extend into the cavity that have nematocysts and other cells that start the digestion process of all the prey that find their way into the jellyfish.   From the top of its umbrella to the bottom of its longest tentacles, the average bulwark rainbow jelylfish is 150 ft (~45 m). These tentacles have absurd amounts of neurotoxins that, when one comes in contact with them, will have a variety of affects ranging from a simply rash to attacking respiratory function and even death. They are a huge problem along the coasts of the Ahdra'coil as they tend to clump together and the currents bush them into the Gulf.

Larval Planulae

The sperm fertilizes the eggs during the jellyfish's sexual phase, which results in the development of larval planulae. The planula body is roughly cylindrical or egg-shaped and covered with cilia, which are microscopic projections that resemble hair and are utilized for propulsion. The planula is a little larva with cilia all over it. Once fully formed, it settles onto a solid surface and grows into a polyp.  

Polyps

The polyp typically consists of a short stalk with a mouth on top that is surrounded by tentacles that point upward. The polyps mimic those of anthozoans, such as corals and sea anemones, that are closely related to them. The jellyfish polyp may be solitary, living on the seabed, boat hulls, or other substrates. It may also be free-floating or attached to minute pieces of plankton that are living on their own, fish, or other invertebrates in rare cases. Polyps can exist alone or in colonies. The majority of polyps only have millimeter-sized feedings. Many years may pass during the polyp stage. A segmenting polyp, also known as a scyphistoma in the Scyphozoa, is a polyp that can start reproducing asexually via budding after a break and is spurred by seasonal or hormonal changes.  

Ephyrae

More ephyrae and scyphistomae are produced during budding. The tentacle bulbs, the manubrium (above the mouth), or the gonads of hydromedusae are some examples of different species' budding locations. The tentacles of the polyp are reabsorbed during a process known as strobilation, and the body begins to constrict in various locations close to the polyp's top extremities. These get more intense as the constriction sites descend the body and different ephyra segments split. These are the free-swimming ancestors of the adult medusa stage, which is the stage of life that is ordinarily recognized as a jellyfish.  

Adult

The ephyrae, which are initially typically barely a millimeter or two across, swim away from the polyp and develop. Limnomedusae polyps have the ability to produce a creeping frustule larva that develops into another polyp asexually before crawling away. Some species have the ability to produce new medusae by budding from the medusan stage. Some hydromedusa species divide through fission. When they reach adult size, the jellyfish flock to areas where their is a large food supply. This is usually controlled by light in the area, as the seem to appear at dawn or dusk. Adults will release sperm and eggs into the water around them where the unprotected eggs become fertilized. After fertilization, the eggs develop into the larvae.  

Symbiotic Relationships

Small fish that reside amid the tentacles act as bait and are immune to the jellyfish's stings, protected from potential predators, and able to share what the jellyfish catches.