
1. Great animal migrations —
Poaching, war and deforestation threaten magnificent sights such as the annual pilgrimage of wildebeest across the African savannah.

2. Watching polar bears up close —
Climate change is melting polar bears' Arctic habitat -- you can still see them in the wild in places such as Canada's Hudson Bay.

3. Counting the stripes on a tiger —
The world's most endangered big cats have disappeared from 90% of their historic territory. India and Nepal present rare chances to see tigers in the wild.

4. Snorkeling world's largest reef system —
Australia's Great Barrier Reef is shrinking. Snorkeling over it may become increasingly rare.

5. Tracking gorillas in the mist —
Poaching and disease are decimating the world's largest primate -- you can still watch them in their habitat in the Republic of the Congo.

6. Seeing creatures of Darwin's Galápagos —
You can spot the animals that inspired Darwin's "The Origin of Species" on a Galápagos cruise.

7. Hanging out with orangutans —
One of man's closest animal relatives could be extinct in a decade. In Borneo you can visit them in rehabilitation centers or the wild.

8. Watching sea turtles nest —
Intense egg collection, fisheries bycatch and light pollution have forced species such as the leatherback, hawksbill and green turtles onto endangered lists.

9. Spotting Africa's Big Five —
Botswana offers one of the best chances to see rhinoceros, the most endangered of the legendary Big Five African game species.

10. Swimming with whale sharks —
Demand for their meat and fins presents an enormous threat to whale sharks. You can still swim with them off the Philippines.

11. Being awed by a giant panda —
There are only around 1,600 giant pandas left in the wild.


