As part of an incredible – but pricey (it costs $1 million) – philanthropic expedition with Natural World Safaris, you can see the majestic polar bear up close in the Arctic North of Canada, as well as visiting 11 other countries to spot 18 of the world’s most vulnerable species, including penguins in Antarctica, snow leopards in India, sun bears in Borneo and jaguars in Brazil. If you've not got a million to spare, try G Adventures' Realm of the Polar Bear expedition, which navigates the Svalbard archipelago over 8 days and costs around $3,500 (£2,500).

Where to see incredible animals before they become extinct