Behemoth

Behemoth was a marine creature of the Ivory Coast with a mysterious appearance, since looking at it caused madness in those who saw it.

Age of Conquest
A single Behemoth caused a months-long separation of the Mantis expedition to the Colonies from Rokugan, since no ships could get past its hunting waters to return. It was believed this Behemoth was slain via an incredibly dangerous tactic employed by Moshi Kalani, whose strikes were guided by Komori, seeing through the eyes of a bird.