BBC Earth HD

Michael visits the busiest fishing port in Andalucía, stopping off in Huelva city to follow in the footsteps of Christopher Columbus and visits the stunning Gruta de las Maravillas caves.

British comedian Griff Rhys Jones begin his epic 'off-highway' journey of New Zealand from north to south, starting at Cape Reinga and travelling via Russell and Kaipara Harbour to Auckland.

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers. The extraordinary lives of Jeju Island's female free divers are brought to the surface.

Join Ryan and his team as they explore the city of Zurich and then set out from Vaduz in Liechtenstein to embark on this mammoth trek towards Montreux on the shores of Lake Geneva.

Steve Backshall heads out to find one of the UK's greatest predators: the dragonfly. He witnesses the aerial prowess of the hobby and dives underwater with the puffin.

Steve goes on a journey to meet the extraordinary people fighting to save one of the most important environments on earth: the coral reef.

Inspect an abandoned silo complex repurposed into a show-stopping art gallery, then visit a family home carved out of an ancient fortress. Witness the ways in which these abandoned structures have been reinvented as part of epic upcycling projects.

A once in a generation eruption on a volcanic island. In the United States, heavy rain and snow melt submerge a town and in Italy, giant hail pulls up pavements, and traps drivers in their cars.

Simon Reeve voyages across the Coral Triangle, a huge wilderness of tropical seas and jungle clad islands in the southwest corner of the Pacific that's been described as the Amazon of the seas. Surrounded by the Philippines, Malaysia and Indonesia, the Coral Triangle is one of the most beautiful and biodiverse corners of our oceans, crucial to the health of the wider marine environment.

Bear and tennis champion Roger Federer hit the slopes the hard way.