Non-human lifeforms born of the ocean, initiators of the Profound Silence. They have a very short evolutionary cycle to deal with hostile creatures and the environment. To this day, they continue to threaten Ægir and the coasts of Iberia.

The Seaborn are hyper-adaptive aquatic creatures hailing from the abyss of Terra's oceans. They evolve incredibly fast and possess the ability to mutate their own somatic cells without relying on generational heredity.
seaborn (arknights)