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.

Lily Pads is the only other dragon on her masters scroll to have been the parent of a Bluna dragon. She doesn't flaunt this fact, as she considers herself a failure. She feels that she should have Deep Sea children, and anything otherwise is not worth talking about. Lily is a very proud dragon, and she treats everyone else as if they are not worth anything. She has few friends, so she just talks to herself. This gives many the impression that she is crazy. Lily is unaware of the whispers going on behind her back, which is probably a good thing, since she is rather violent.