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.

Crashing Waves is a quiet, touchy dragon. He spends his life in the depths of his group's home's river, where Tidal Wave spends his time on the surface. He hates being bothered, and is no good with hatchlings. He is young and feisty, and good at teaching lessons to those he thinks need them. But despite his attitude, he is very loyal to the group, even though he only sees most of them when he surfaces infrequently for air.