Bobble Jelly
The bobble jelly is a small (1-1.5 in. diameter), bubble-like organism that floats around Zone 27. They float at the surface of the water with the opening of the bubble facing upward, drawing Nebulimpa protos through the opening with their tentacles, eventually forcing it towards their mouth in the center of their body.
The bubble is made of smooth, elastic tissue, allowing the jelly to take moderate impacts with ease, bouncing away from the source. They can be considerably deformed before suffering any damage. The combination of these two features makes it difficult for would-be predators to get ahold of them.
Their tentacles are attached to the inner walls of the bubble, the only maneuverable portion being the tips of the tentacles lining the opening of the bubble. The hole can be opened and closed at will by pressing it shut with their tentacles. It is able to move somewhat by contracting its tentacles and forcing water through the opening, propelling it forward.
Through the absorption of the anti-freeze compounds of its prey, it is able to withstand and thrive in very low temperatures.
Bobble jellies are hermaphrodites, but do not produce asexually. When mating, two jellies carefully rotate their bubbles so that the openings are facing each other, and then latch onto each other's openings with the tips of their tentacles. The two mates then swap sperm and eggs, which float around inside of their bubbles, eventually meeting and fertilizing the eggs. The eggs are kept inside of the bubbles until they hatch, and the baby jellies will live there for several days before venturing out on their own through the opening.