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.

Sea Leviathan is not often seen by her other clanmates. The only reason she 'joined' the clan was so that she could have more access to food than she would on her own. However, she also kind of enjoys the responsibility of protecting the other sea-dwelling dragons from deep-sea predators, because she's pretty adept at fighting. She surfaces more often than other deep sea dragons, but isn't very comfortable doing so, because for most of her life she was mainly solitary.