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.

No other dragon has caused as many near heart attacks for their master as Pike. Realizing shortly after birth that the young hatch-ling couldn't breathe out of water, his master threw the young dragon in one of the underground pools dotting the cave. When he realized that Pike was still having trouble breathing, his master spent three days exploring with Rumblebelly looking for a saltwater habitat. Eventually he found deep in the caverns a brackish lake with a underground connection to the ocean.

Pike now spends most of his days in the deep ocean, only returning to the cave lake, usually to sleep. He occasionally surfaces to spend time with Rumblebelly, whom he seems to be on friendly terms with. It would appear that none of the other dragons are aware of his existence, disappearing from the main caverns only days after hatching. He is also a bit of a mystery to his master, due to the naturally hard to observe nature of his kind.