Thanks everyone.
@Blackwolf1666 Yes I am from the antipodes.
@Silverslxx Thanks for the tip - I'll have to go find at least 8 packs then. Shame Dr. Koo is out of production at the moment!
@Hammers I also have the Copplestone Penguins, so I guess they could work in the Antarctic. I guess the Polar Bear will have to just stay put with the Walrus miniature I got if I was to do a At the Mountains of Madness type game! On a related note, I really should try and get miniatures to replace the cardboard cutouts for Arkham Horror. I've heard the plastic minis from Mansions of Madness paint up quite well.