Charibdrus are large sea monsters on par in power with Neptunians. They can grow very large and can be very destructive. Native to the calm belt the only surface during huge stroms in which they creat giant whirlpools. They are rare, but not nearly as rare as their adult forms Poseadrus. They grow from smaller codarus.
Little is known about the life cycle of this huge sea monster other than it evolves from a smaller Codarus into it's larger Poseadrus stage.