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.

Cascade's title "of the Breaking Waves" comes from his mother being know as "the Breaking Waves." Like the rest of his kind, he loves the ocean. Luckily, Chaos had recently added some coastal territory so she could raise more coastal dragons like Cascade. He often goes shallow water fishing with Draco Equestria, though she can't hunt in water too well. He often skims the waves and brings prey to her instead. He secretly loves her, even though she is a horse dragon.