Deep Sea Dragons, as their name suggests, spend most of their time in the darkest depths of the sea. They have a bioluminescent dorsal spine that serves to attract prey and communicate with their own kind. As with many deep sea animals, they generally eat whatever they can manage to bait. They rarely leave the ocean floor, surfacing only during breeding season. When they do choose to travel to the shallower depths, they avoid bright lights and will only come up far away from shore.

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.

'Emile' (eh-meal) was a surprise gift for Kaoru, from a close friend. Naming him after a vicious warrior of ancient times, she expected his personality to be similar: not so. Emile is a quiet dragon, and rarely visits Kao unless she sails out to the deep deep waters in a smaller boat in the middle of the night, which she does about twice a month. Emile is very gentle, with the exception of hunting times, and likes to teach as much as he likes to learn.

He teaches every young Deep Sea how to survive the wild, and he taught his owner that Deep Sea Dragons do NOT like fresh water.