Deep Sea Dragons, as their name suggests, spend most of their time in the darkest depths of the sea. They have a bioluminescent dorsal spine that serves to attract prey and communicate with their own kind. As with many deep sea animals, they generally eat whatever they can manage to bait. They rarely leave the ocean floor, surfacing only during breeding season. When they do choose to travel to the shallower depths, they avoid bright lights and will only come up far away from shore.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Behold, seeker of the dragon lore, Jacikay of the deep sea dragons. Not unlike to some kinds of the anglerfish, he has a phosphorescent filament protruding from his brow. With this he can attract his too curious prey. He does not hunt smaller fish, though. Jacikay, for all the resemblance his race bears to Nessie, hunts for divers. He has learned to hide and show the glow of his phosphorescent filament to imitate human Morse code, signaling SOS and thus luring unsuspecting and helpful aquanauts (a synonym for "divers" used just for the sake of linguistic variety) to their death. Although his aquatic territory has been officially named a prohibited area, many people still seem to underestimate the danger and go diving there at night, very often never to return again.