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.

This Coastal Waverunner dragon, Hydrok, spends most of his time in the water, catching prey. Occasionally he will fly around the land, looking for a new "fishing" spot. When he is not hunting from the ocean, he is often playing in the sand dunes and shallow tide pools. Hydrok sleeps in a cave that has been half-flooded by the ocean, and usally lives in a rockery.