Stretch,
My mates got a float plane rating in the Kimberley. I was just starting the work up to it when I got the coast watch job.
The Antarctic gig looks very interesting, there's a PPRuNer who does that in a variety of aircraft. (Not Twotters). My sis in law's a flying doc. (She does the doc bit, other folks do the flying bit). Never did aerial survey but mates who have really enjoyed it. Got a mate who does laser oceanographic stuff in a Dash 8.