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.

WaveDriver is a Deep Sea dragon. PearlWave the Water dragon found his scaly egg lying under a rocky outcrop deep underwater. After searching for parents and finding none, she  brought the egg home and, not knowing what else to do, placed it in her pile of shiny "treasures". The egg remained unhatched for so long that she soon viewed it as another, more interesting, shiny. Therefore she was rather surprised to find a deep blue hatchling wriggling in the midst of her collection one morning. Taking the situation in her stride, she happily took care of the hatchling, bringing it food and swimming around with it. When WaveRider grew up, he remained very close to PearlWave, considering her his mother and following her and her best friend, his "Aunt" MairanaFin.