
10. Island safari, Hawaii, United States —
Over at Big Island adventurous vacationers can get aboard the Safari Explorer with just 36 others and, in between kayaking and dolphin spotting, engage in a mesmerizing ballet with manta rays.

9. Northwest Passage, North America —
For centuries, people died trying to get through the treacherous Northwest Passage. With changing climates, the journey can now be completed with more confidence and your bragging rights enhanced without fear of death.

8. Through ancient Kimberley, Australia —
This remote and beautiful part of Australia is the country's adventure cruise hotspot. The season is from April through to September, when the torrential rains have eased and water cascades off the plateau.

7. Pacaya Samiria Reserve, Amazon —
Piranha, sloth and pink dolphins inhabit the Pacaya Samiria National Reserve. You can commune with indigenous families living along the banks before retiring to a luxury 24-passenger vessel to fry your piranha.

6. 'Jungle Book' tour, India —
While the cruise aboard the 24-pax Charaidew trundles from Guwahati to Tezpur, you'll enjoy mild Assamese curries onboard and visits to a wildlife reserve en route.

5. Into wild West Africa —
The once war-torn republics that form a patchwork between South Africa and Morocco are opening up to seaborne tourists.

4. Following Scott, Amundsen, Antarctica —
Travelers can sail in the wake of the explorers Scott, Amundsen and Mawson to the Ross Sea or Commonwealth Bay, where they walked off into the white. A hundred years later, their huts, crammed with preserved original kit, remain.

3. Island hopping in the Pacific —
The ship looks like a movie prop for Gilligan's island, but the little 12-pax Braveheart sets sail from Papeete for some of the most remote, uninhabited islands in the Pacific Ocean.

2. Ice-breaking to the North Pole —
It doesn't get much more extreme than this. Just 100 years ago, sailing to the North Pole was the equivalent of going to the moon.

1. Down to the Titanic wreck, Atlantic Ocean —
Deep sea adventures are starting to compete with space travel as an extreme trip, with the likes of Sir Richard Branson considering ventures in this space, too.



