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.

Sakiyu's egg was found nestled in the sand about to be swept out to sea by the raging tide. She was tucked away in her mother's skirt and carried home where she was raised into a beautiful, serene and playful Coastal Waverunner adult. She spends most of her days in the water, enjoying the feeling of the cool waves rushing over her scales while her mother (and sometimes older brother) sit on the bank, watching out for her. She likes to dive to the bottom of the sea and retrieve treasure for her family so at least one piece of her gifted treasure is in all of her sibling's hoards. She has a sibling rivalry with her older brother Fikuyo and likes to douse him with water, an activity which he hates with a passion, but they both love each other very much and work together to protect their growing family.