User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-5020152-20130613201504

I have a theory concerning the new shark-like monsters in MH4. Namely, how they are able to seemingly swim through ice.

For the younger Sukuagirus, I assume they stick to liquid water, although the huge spear on their heads may be used to slice through thick ice like the beak on a Glacial Agnaktor.

The fully grown Zaboazagirus have no spear, although they can form one from ice when enraged. It's unlikely that they use this to help them swim through ice, because it only appears when they are enraged (and the newest trailer shows one without its ice prong swimming through the ice).

So, I imagine that their dorsal fin is extremely sharp in order to help them cut through the ice. Because they have no cutting weapon on their heads - which extends beyond their dorsal fin and thus would be the first part of their body to come into contact with the ice - I think that the Zaboazagiru has an extremely thick skull in order to push or bash its way through, while using its super-strong legs to propel itself.

Any thoughts?