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.

Despite being unbelievably unhelpful on land battles. He is extremely professional on underwater and aerial battles above the ocean. Skrelpfin gets very depressed often due to the fact that there aren't much water-thriving dragons in Ether-Equinox's pack, as a result, his fellow packmates visit him everyday to eat fish and play with him in the water while the fire dragons just stay on the beach basking in the sunlight. When there is a battle ongoing, Skrelpfin sees to it to catch a lot of fish for dinner when his packmates return.