Sky Jellyfish

Sky Jellyfish, affectionately known as sky jellies, the phenomenon of flying jellyfish appeared shortly after the great flood. These massive creatures, easily out-sizing some of the larger airships of our time, seem to float aimlessly through the clouds, following air currents and pressures with seemingly no direction or will of their own. However, everything serves its purpose; these majestic creatures float using pure hydrogen, a substance which collects from the atmosphere into the bell of their anatomy. Their filtration of hydrogen from the greater atmosphere is what allows humans to continue to breathe in the altered post-floods atmosphere, keeping the balance of gasses in the air for a breathable atmosphere.

Feeding on anything which comes into contact with their drifting tentacles, or the unfortunate creature which gets caught in their gelatinous bell, many use toxins located in their tentacles to immobilize their prey, slowly pulling it into the bell, where it will be digested. In recent years, after extensive tracking smacks of these creatures, it has been discovered that sky jellies might not be as mindless as they previously had been assumed; they have been shown to use the hydrogen in their bell much like the air in a hot air balloon, discharging amounts to sink, or collecting more to rise in the air. They have also been shown to use air currents to congregate every few years into large masses, a ritual which results in the reproduction of the species through yet unknown means. Generally, these creatures avoid floating cities, though one of the greatest experiences of travel through the sky is sightings of a smack of sky jellies ...