User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-1011548-20110714075631/@comment-3150696-20110714092044

Raviente probably eats underwater, thus explaining the fins and such. It probably eats there because there are no other monsters to feed on in the Geyser Island. It'll move like the real life Sea Snakes underwater. Due to its immense size, it'll also have large lungs. The larger the lungs, the longer it can hold its breath. I believe that's enough evidence to prove my theory. But the C. Fatalis is indeed tricky...