Abyssal

Lore:
Deepsea serpents make their home in the deep oceans of the dragon world. They are solitary dragons who explore all parts of the sea, especially at the deepest and darkest depths. That's when their spines come in handy - they emit a glow by will so that the dragon may be able to better see in the darkest waters. However, since this glow is controlled by the dragon's will, it can be dimmed down to nothing if necessary. Some deepsea serpents even have their clawtips and wingtips glow (which is quite in handling objects underwater).

Coloration matches their ocean environments, with their bodies mirroring dark waters and their wings imitating the currents' shadows. As they have long, snake-like bodies, their motion underwater easily intertwines with the sea's currents. The way they weave almost makes them appear to slip in and out of sight of the ocean's waves. It is why deepsea serpents are quite hard to see and find.

As they are explorers, many of the deepsea serpents collect the treasures they find, either in a separate hidden lair in the ocean or adorning their body (usually in the form of jewelry if it is the case). Some of the larger dragons are able to contend with underwater beasts (which leads to scarring in most brutal cases) while smaller dragons flee to safer waters when faced with danger.

Rarely, their scales can exhibit bioluminescence (poison gene) that can glow at will of the deepsea serpent. It also shows that they are more dangerous to any adversary as their spines will be poisonous to the touch - an added safety adaption due to their brightness underwater.