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.

Dyalga and his three siblings found the cave with the woman living in it. He trusted his older sister's judgment of the young human female. He stood his ground as the smiling woman petted his younger sister Kaiomi and listened to her giggling. His heart skipped a beat because he began to sense the woman's kindness. The woman introduced herself as Xuxa.  The four decided it's okay to live with Xuxa for the rest of their lives.  They could find no reason not to do so.