When Water Dragons mature, they lose the ability to survive on land, entering the water permanently. They are adept swimmers and eat whatever fish are in the lake they live in. They tend to inhabit the same lake for their entire lives, although a few live in the ocean and swim all over the world.

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.

Champion Swimmer Of Deep Seas is very, very fast. She eats anything made of metal to make herself strong. Champion Swimmer Of Deep Seas only swims in deep seas for races and always wins first or second place; it is because of the metal she eats. She is in love with no dragon because she doesn't want to be distracted in swimming contests.