The red angel sprite

The red angel sprite, or Pinainenkelihahmo, is a large jellyfish-like sea creature, usually found in the lower reaches of the twilight zone within Frusnajättar's oceans.

Its appearance is defined by the four wing-like structures on its sides, which can span up to twenty meters each, and are used to filter plankton. Using its tentacles, which can grow up to a hundred meters long, Pinainenkelihahmo anchors itself to the seabed, so it can remain stationary within plankton rich ocean currents.

Pinainenkelihahmo uses a mixture of usually non-lethal bioelectric shocks and flashing displays of bioluminescent patterns to ward off predators, which, in combination with its comparatively deep sea habitat, has led to it establishing small but stable population all across Frusnajättar.

Once they reach sexual maturity at around ten years old, male Pinainenkelihahmos shed their 'wings', and begin traversing the ocean in search of a mate. This will also lead to their tentacles significantly shortening, in order to enable more convenient locomotion. Meanwhile, sexually mature females begin flashing their bioluminescent patterns in rhythmic intervals, in order to attract a mate. Finally, once a male has found a female, it uses its shorter tentacles to latch onto the female, and both descend to the seabed. Once the mating process is complete, both animals die, with their remains serving as nourishment for their offspring, until said offspring has grown enough to begin filter feeding on its own.