BBC presenters look back on their adventures in Australia and the islands of the South Pacific.

Steve Backshall describes being dropped into the nest of a wild saltwater crocodile – to help scientists in the Northern Territories assess the species' health – one of the 'craziest' things he has ever done.

Gordon Buchanan faced his own fears when he visited Owarigi in the Solomon Islands, where two members of the local population helped him deal with his fear of sharks through freediving.

Liz Bonnin looks back on an awe-inspiring encounter she had on Australia's Great Barrier Reef, where she witnessed the extraordinary hatching of baby green sea turtles on Heron Island.

Finally, Steve Backshall and George McGavin recall an unforgettable trip to the extinct volcano Mount Bosavi. Steve remembers discovering a new marsupial species, a cuscus found nowhere else in the world, while George recalls setting a trap that revealed an enormous diversity of moths.

BBC wildlife presenters look back at their adventures across India, Bhutan and Bangladesh.

Liz Bonnin remembers a remarkable morning migration by thousands of cranes to the small village of Khichan in Rajasthan. Colin Stafford-Johnson recounts his time filming tigers in India and forming a special relationship with the boisterous cub Brokentail.

Chris Packham looks back on a tiger-spotting trip to Bangladesh, which lead to ‘one of the worst views of an animal he'd ever had, and yet somehow the best!' Liz shares a memorable encounter in the Western Ghats, where she visited the locals trying to preserve the rare lion-tailed macaque.

Finally, Steve Backshall and Gordon Buchanan recall an expedition looking for tigers in the mountains of Bhutan. Although they saw a great many animals, including a red fox, a lammergeier, bears and even a snow leopard, there was no trace of a tiger population - until, after a gruelling trek, Gordon made a sudden and dramatic discovery.