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.

Born in almost eternal darkness, Serpentess chose to spend her life there. She is afraid of the surface and what might happen if she swam there. Other Deep sea dragons in her clan aren't so afraid and have visited the surface a few times, but as much as they wanted Serpentess to see that there isn't anything scary, she stuck to her beliefs and stayed clear of the surface. She might not swim there because she had imagined it to be almost a magical, not real place and just doesn't want to see her dreams burst. She chose to live in a fairy tale instead of reality.