remote_medicine

Australian Antarctic Division website
employ doctors for 3 or 9 month positions depending on whether just 3 month Summer or a 9 month Winter stint.
opportunities also to be stationed at Macquarie Island - no icebergs but lots of penguins and isolation.
need to have had appendicectomy prior to travel
they will usually provide you with a brief dental course but you will be expected to have reasonable anaesthetic, resuscitation, minor trauma procedural skills such as Bier's block reduction of fractured distal radius.

cruise ships are often looking for ship doctors which may be of interest to EM doctors as it also gives them a way of touring exotic destinations.
Oceanwide Expeditions
- run polar expedition cruises usually from Ushuaia, Patagonia in southern Argentina using ice strengthened Russian-made research vessels carrying ~50 passengers, a Russian crew of ~32 and thus usual consultation load is about 1-2 per day.
- no pay but no charge for yourself but you may not be able to bring your partner for free.
- you need to have your own medical indemnity cover - perhaps via volunteer or Good Samaritan clauses.