In autumn, its body becomes fattier in preparing to propose to a mate. In the spawning season, they gather from all over to travel upriver. During this time, the Seaking males can be seen performing their courtship dances to woo Seaking females. The male also uses its powerful horn to bore holes in riverbed boulders, to keep the Eggs safe, although in other seasons it will make and live in their own nests. Seaking is very protective of its Eggs, defending its Eggs with its life and fighting with its horn. The male and female will take turns patrolling around their nest and Eggs, and the guarding of Eggs by the Seaking goes on for over a month until the Eggs hatch. Seaking can be mounted.