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.

Her name means "Water" in Japanese. She is one of the many daughters of Kentaro and Kiyomi. Ever since she was little, she's loved the water, she's been playing in the waves ever since she can remember. Now that's she grown, she hunts in the water, diving quickly through the waves and into the water, nabbing a fish real quick, and popping back up. That's how she met Kei, she was hunting and saw her. He'd been resting on a rock, and he thought she'd accidentally fallen into the water and had rushed in to save her. He was awestruck when she came up with a fish in her mouth. Mizu was the first Waverunner in the colony, so Kei hadn't known. They found each other to be good company, and so they started hanging out together. Soon, they were courting, and became mates. They love each other very much, and always will.