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.

Surreal Seabeast, a calm and decent Deepsea dragon, once got into mating season. As no other Water or Deepsea dragons lived nearby, she decided to see if any males lived in the upper layers of the ocean. Just as she surfaced, a great Thunder dragon was flying overhead and saw her. It turned out to be a male, swerving for months, lost on the sheer vastness of the ocean, and getting pretty lonely too. They overcame their physical difficulties and produced several eggs, but how they managed it remains a complete mystery.

The biggest problem for them was their first egg together. When it hatched, a Thunder hatchling emerged from the eggshells. To begin with it caused a short-circuit in the water and nearly electrocuted its own mother, and then it had to be rushed to the surface through the miles and miles of water between him and the air. Miraculously it survived the ordeals, and since then has been nurtured by its father in an environment suitable for Thunder dragons.