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.

Living in the deep sea does not improve Cylamika's social skills at all. She, unlike the other dragons of her kind can't control the light atop her head. Instead it changes depending on how she feels. Its luminescent glow still works for attracting fish. Once it caught a particularly big fish. A water dragon hunting for firefly squid accidentally bit her head. At first he was embarrassed but they laughed it of. After that day he would come visiting her. She was pleased to hear that he though her light changing depending on feeling was truthful and amazing. That moment she felt appreciated and loved. Her light shown brighter than ever that day and she is currently his life mate. She likes the new food he introduced her to and she has even once ventured up to a reef with him. Where she saw a rather frightened dorsal dragon stare at her like she was on fire and dart in to a cave!