Actually I would suggest you switch the whaleshark to Asia(Philippines) and go with the indigenous shark of Australia, the Port Jackson or the grey nurse (raggie) which is hitting threatened levels. The PJ shark's mating is a mass orgy with cool eggs and if you find one that is about to hatch, it's very cool. Ok they are not man eaters or very big but hey they are sharks.
The whaleshark industry in Donsol is something worth talking about again and again. I'd say try the threshers as well but they are few and getting fewer and it's pretty deep diving to get them. You don't have the time I don't think to get decent shots.
Wait australia isn't a northern continent. If you want to impress, try the salmon shark in Canada/Alaska, which is technically north enough to be called the Artic continent. ![]()