Coastal Waverunners spend most of their time skimming the waves along the coast, snatching up their prey from the shallow waters. They have developed markings along the leading edges of their body that help disguise them as breaking waves. When they are not hunting, they enjoy playing among sand-dunes and shallow tide-pools. These dragons live in small but noisy rookeries. Some stories say Waverunners can fly for days on end without landing.

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.

Sky Windwalker is a very special dragon. Why She has a twin named Ocean Windwalker, who happens to belong to Sky's human's partner and closest friend. Because there were rarely ANYONE who WOULD never kill a dragon, Sky and Ocean (as they are twins) would be in danger of being killed before they even got to see the world. So since Sky's human wanted to hide both of them from the Dragon Slayers, she decided to trust her partner with one of the eggs. When Sky hatched, she had a feeling of some kind of connection to another dragon. So when her human noticed this, her human thought that it was time to show her. And that's how she knows that she has a twin.