User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-3039270-20110714015945/@comment-1011548-20110714064242

That's a point, no Leviathan in the Sandy Plains. I always thought that Proto-Agnaktor (for want of a better word) originally lived in the ocean, before leaving them due to predation or competition or something. Anyway, it left the ocean in various different places, but the only places it survived were the Tundra and the Volcano. Then, it became more adapted to those specific habitats until we get the Agnaktors we have today.