Shenanren

The black dragonborn don't have a central authority. They trade with their neighbours in their better humors, or raid them when they can get away with it. They're ruled by various petty kings, and often these kings are also the captains of their own small, personal fleets. Cooperation and alliances between captain-kings is more common than not, and in times of national defense all internal grievances are laid aside, but true organization is almost unheard of on a national scale.

The Shenanren revere the Leviathan Yun De Sang, but by and large do not worship it.

Black dragonborn are able to breathe gouts of an incindiery acidic gas in a wide but shallow spread. This breath weapon has a length equal to 5', plus an additional 5' for every 3 Insight Ranks, and a width of 15', and deals (Water)k2 damage, and further reduces the target's Armor TN by the attacker's Water Ring per turn for 2 turns.

They are excellent swimmers by nature and lifestyle, and in hunting subaquatically often use their breath while biting prey in order to make their assaults more grievous and decisive. Black dragonborn martial arts styles, many of which focus on grappling, take-downs, and throws, often (though not universally) feature biting strikes and holds, alone among the dragonborn. Styles of the Shenanren

Wohe Tunshi Gungfu (6 XP)
Among other things, the Shenan have become feared for their skills and savagery at grappling. "The Swallowing Vortex" style was inspired by the death roll of the crocodile, and the xiake, like the crocodile, learns to clutch relentlessly to his prey and drag them down. Contested grapple rolls against the xiake suffer a penalty equal to twice the xiake's Water Ring. In addition, xiake may perform the Throw option as a simple action, and doing so does not necessarily free their target from the grapple. Finally, whenever the xiake suceeds in a contested roll, they may perform a biting attack as a free action for (Strength)k1 damage. Black dragonborn may take this style for free upon creation.