User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-4775842-20120813183201/@comment-4212769-20120814074631

I would say that with this defense system it just got too heavy and too "un-streamlined" to swim so it needed to evolve terrestrial limbs that it can at least walk on the ground of the sea.

My questions are: What does it feed of? Where does it get these food sources? How often does it need to feed when it uses that much energy?

First, is there a food source that comes around to the Disasterous Sea? Well, I think some monsters (its teeth surely are for carnivorous use) will occasionally. But this isn't enough to maintain such a energy loss.

My guess would be, that it can get food sources in the ocean around it but those food sources disappear once in a year to wander away. That's the time Guran-Miraosu needs to travel out of the Disasterous Sea to deeper oceans and a great depth. Maybe there is another food source on the ground of the sea that is only available once in a year. I would say that the monsters it normally feeds off are better swimmer and aren't available in the deep ocean. In that time it could feed off a big "swarm" of a benthos species that have possibly their mating season at that moment. Not only it finds food with those but it could also be the mating season for Guran-Miraosu meeting there in masses and finding this place instinctively.

But that isn't all, it also could be the mating season of Ceadeus that were waiting for this event because they have enough food now and meet other Ceadeus, too.

Ceadeus is a carnivore if you look at its teeth:

http://images.wikia.com/monsterhunter/images/9/92/Navald4.png

That's when the defending system of Guran-Miraosu is significant again. Because the Ceadeus also attack those (who knows? Maybe Gurans are for Ceadeus a delicacy) the Guran needs to defend itself. That would be the only time it actually needed this system because Ceadeus and other bigger predators cannot come to the Disasterous Sea (at least full-aquatic predators).

Well, maybe I'm just wrong, but you cannot deny that would be a great spectacle. ^^

And Dippamus: If you look on the Ceadeus page, you'll see it's weaker to dragon and thunder than to fire. I'll just believe that isn't a mistake on the page.

Sorry, for the wall of text. ^^'